Vangarden — 2-Week Cultivation Report

Executive summary

Active flower runs

F2-F18 (no F1 mom, no F15)

Critical rooms

Substrate ≥75°F or air ≥82°F day or VPD ≥1.7

Watch rooms

Margin warnings — see room cards

In-band rooms

The headline this week:

Flower 6 was not resolved from the 4/20 callout. Day air 81.3°F (was 81.5°F), VPD 1.7 day / 1.5 night (was 1.72), substrate avg 74.8°F max 76.6°F, top zone EC 8.95 dS/m. The HVAC issue is now 14 days into a known-fault state. Whatever was tried, didn't land.
The hot-room cluster has expanded into early flower. 4/20 cluster was F6/F10/F16/F18. Today every Week 1–2 room is running 80–83°F day with substrate 75–79°F: F8 D7 (82.2/82.4°F, sub max 78.5°F), F17 D5 (82.5/83.3°F night, sub max 78.8°F), F13 D12 (sub zone max 80.9°F), F16 D14 (sub max 78.2°F), F10 D19 (sub max 78.1°F). These rooms are in the most yield-sensitive phase (early flower, root-zone steering window) and they're being run with degraded root function. This is the bigger story than F6 alone.
Pore-EC stack is widening. 4/20 flagged F12 z72540 at 10.78 dS/m. Today: F2 z72469=12.05, F12 z72538=10.17, F14 z72552=10.32, F9 z72525=10.09 — four rooms past 10 dS/m on hot-zone probes. This is a flush-or-finish decision per room, not a sensor noise issue.
F8 and F17 night-temp inversion. Both running hotter at night than day — HVAC isn't holding setpoints in the dark cycle. With night VPD 1.6 in F17 against an early-flower target of 0.8–1.1, the plant is losing water in the dark phase when stomata should be closed. This is also new since 4/20 (those rooms were empty on 4/20).

What's holding: Mid-flower bulking in F3, F4, F11, F18 is in-band on VPD/VWC/dryback. F9 (the prior salt-stack callout) appears to have responded — VWC came down 60.8% → 48.2%, dryback opened up to 18.9% (the deepest in the facility), and EC is climbing on schedule. The hot-spot zone (z72525) is still elevated at 10.09 — physical inspection still warranted, but the room-level steering pivot worked.

Cleanest runs: Flower 5 (D54 ripening, 53.9% VWC, 75.4°F day, EC 6.1) and Flower 12 (D49 ripening, 50.4% VWC, 74.0°F day, dryback 17.4%) — both finishing inside ripening targets. Flower 9 (post-pivot) and Flower 14 (D47, 74.6°F, dryback 15.5%) also clean.

What changed vs the 2026-04-20 report

Direct comparison against the snapshot that went into the 4/20 client meeting (Bryan Gay · G. Morales · E. Kokkennen). Numbers are 24h facility averages then vs 14-day day-mean now — directionally correct, not apples-to-apples on window length.

Room	Phase now	Air temp (°F)	VPD (kPa)	VWC (%)	What moved
Flower 2 D55	Week 8 Generative	74.8 (+1.1)	1.31 (+0.18)	50.4% (-3.1)	F2 ran into late ripening. Pore_EC z72469 climbed to 12.05 — extreme. Either intentional finish or salt stack on a probe.
Flower 3 D28	Bulking/Vegetative 2	79.5 (+2.6)	1.41 (+0.07)	48.4% (-5.4)	F3 hotter (+1.7°F). EC climbing on schedule. VPD slightly above target — fine for late bulking.
Flower 4 D40	Bulking/Vegetative 2	77.4 (+0.4)	1.09 (+0.05)	47.2% (+10.4)	F4 more in-band; cooled slightly. EC 5.3 — on track for ripening handoff.
Flower 5 D54	Ripening/Generative 2	75.4 (-0.2)	1.37 (-0.02)	53.9% (+15.9)	F5 reset. 4/20 was 38% VWC late flower; today 53.9% suggests a new flip happened mid-window. Verify plant ID.
Flower 6 D39	Bulking/Vegetative 2	81.3 (-0.2)	1.66 (-0.06)	50.6% (+15.3)	F6: NOT RESOLVED. Air avg 81.3°F day vs 81.5 (worse if anything), VPD 1.7 day, sub max 76.6°F. EC stack persists.
Flower 7 D42	Week 6 Generative	80.4 (+5.6)	1.53 (+0.47)	51.0% (+1.6)	F7 hotter (+5.6°F day) but VPD held — this likely tracks lights-on photoperiod shift. Check lights schedule.
Flower 8 D7	Week 1 Generative	82.2 (+9.7)	1.39 (+0.55)	37.7% (+35.3)	F8 NEW FLIP 4/21. Currently running 82.2/82.4°F (no DIF) and substrate 77–78.5°F in Week 1.
Flower 9 D40	Bulking/Vegetative 2	76.3 (+1.3)	1.19 (+0.30)	48.2% (-12.5)	F9 GENERATIVE TAP LANDED. VWC 60.8 → 48.2, dryback opened 18.9% (best in facility), EC up. Hot-spot still hot.
Flower 10 D19	Week 2 Generative	80.2 (+0.0)	1.52 (+0.10)	40.8% (+12.2)	F10 hot (sub max 78.1°F). VPD/VWC ratchet correctly — but sub temp limits everything.
Flower 11 D21	Bulking/Vegetative 2	79.5 (+1.6)	1.31 (-0.16)	44.2% (-1.1)	F11 steady; D21 in late veg-phase irrigation. Sub max 75.8°F at the threshold.
Flower 12 D49	Ripening/Generative 2	74.0 (-2.5)	1.18 (-0.20)	50.4% (-8.5)	F12 finishing ripening cleanly. EC 10.17 z72538 still in the system.
Flower 13 D12	Week 1 Generative	79.2 (+4.1)	1.47 (+0.46)	44.0% (-1.8)	F13 NEW FLIP 4/16. Sub zone max 80.9°F in Week 1 — worst root-zone heat in the facility.
Flower 14 D47	Week 6 Generative	74.6 (-1.9)	1.24 (-0.18)	50.0% (+16.6)	F14 calm late-flower. Z72552 at 10.32 EC — flush-or-finish call.
Flower 16 D14	Week 2 Generative	81.6 (+1.1)	1.41 (+0.33)	42.3% (-0.4)	F16 NEW FLIP 4/14. Sub max 78.2°F in Week 2. Early flower with degraded roots.
Flower 17 D5	Week 1 Generative	82.5 (+6.7)	1.63 (0.00)	38.9% (+35.8)	F17 NEW FLIP 4/23. Air 82.5 day / 83.3 night — DIF reversed. Sub max 78.8°F. Hottest early flower in the facility.
Flower 18 D26	Bulking/Vegetative 2	80.6 (+0.5)	1.36 (+0.07)	48.2% (+10.6)	F18 D26 still hot (sub max 77.6°F). VPD held at 1.4 — irrigation has compensated, but root temp persists.

Hot-room cluster — F6, F8, F10, F13, F16, F17, F18

The pattern: Air temp ≥80°F day combined with substrate temp ≥75°F (uptake degrading) and zone substrate temps reaching 78–81°F (root-function red line). This is consistent across rooms that flipped recently AND across F6 which has been hot for a month — meaning the heat source is the rooms / their HVAC, not just the lighting load on a young canopy.

F17 (D5 — Wk 1 Gen)

Air day / night

82.5 / 83.3°F · DIF -0.8 (reversed)

VPD day / night

1.6 / 1.6 — early flower target 0.7–1.1

Substrate avg / max

77.6 / 78.8°F

Top zone substrate

z72644 = 79.9°F

VWC / EC

38.9% / 2.9 (low EC ramping)

Plants

1,178

Hottest early-flower room. Plant has 5 days flowering in roots that are routinely 80°F. Generative-phase EC ramp (target 3.0 → 4.5 by week 3) won't land if uptake is degraded. Day-1 priority.

F8 (D7 — Wk 1 Gen)

Air day / night

82.2 / 82.4°F · DIF -0.2

VPD day / night

1.4 / 1.4

Substrate avg / max

77.4 / 78.5°F

Top zone substrate

z72481 = 79.8°F

VWC / EC

37.7% / 3.8

Plants

1,630

Same pattern as F17, 2 days older. Will run into stretch overshoot if not corrected — early-flower 82°F day temps push internodal length without the VPD ceiling that mid-flower can absorb.

F13 (D12 — Wk 1 Gen)

Air day / night

79.2 / 79.8°F · DIF -0.6

VPD day / night

1.5 / 0.9

Substrate avg / max

75.0 / 79.0°F

Top zone substrate

z72544 = 80.9°F

VWC / EC

44.0% / 3.6

Plants

1,800

Worst single substrate-zone reading in the facility. Zone 72544 sits at 80.9°F — well past the 77°F red line. Worth a physical inspection of that zone (sensor placement vs heat source, dripper proximity to a duct).

F16 (D14 — Wk 2 Gen)

Air day / night

81.6 / 81.7°F · DIF -0.1

VPD day / night

1.4 / 1.4

Substrate avg / max

76.8 / 78.2°F

VWC / EC

42.3% / 4.7

Plants

1,836

Two weeks in, hot canopy with hot roots. Dryback reading 18.1% which is good — but the steering signal is being applied to a root system running degraded.

F6 (D39 — Bulk/Veg2) — UNRESOLVED

Air day / night

81.3 / 79.8°F · DIF +1.5

VPD day / night

1.7 / 1.5 (target 1.0–1.2 / 0.8–1.2)

Substrate avg / max

74.8 / 76.6°F

EC top zone

z72514 = 8.95 dS/m

VWC / dryback

50.6% / 16.2%

Plants

2,064 (largest run)

Same room, same problem, 14 days later. The 4/20 escalation (HVAC + CO₂ + EC stack) did not produce a resolution. With the largest plant count in the facility, this is also the highest-yield-impact room.

F10 (D19) · F18 (D26) — chronic warm

F10 air / sub max

80.2°F / 78.1°F

F18 air / sub max

80.6°F / 77.6°F

Both flagged on 4/20 and still warm two weeks later. Mid-bulking can absorb the heat for a while but EC will compress the top of the run. Both have z-level pore EC reaching 8–9 dS/m which is right at the bulking ceiling.

Pattern conclusion

F6 + every just-flipped room running 76–79°F substrate (and one zone at 81°F) means the issue is structural. Either:

HVAC capacity is undersized for the current crop schedule (more rooms in early flower at once = more lighting heat, exceeding cooling), or
Return-air paths are fighting with each other (the 4/20 dehumidification CapEx note is the pre-existing trail on this), or
Substrate-side heating — drippers near radiant heat, slabs in sun, or chiller loop not balanced — only the F13 z72544 reading would localize this.

The diagnostic step is: check whether the air-temp setpoint on the BMS / Argus matches what AROYA's H421 sees. The 4/20 carry-over flagged a possible Argus-vs-AROYA mismatch in Flower 6; if that 6°F mismatch exists in F6 it likely exists facility-wide.

Today's topic — root-zone temperature is the yield ceiling

This is a different story than 4/20's "generative pivot mid-cycle." That conversation was about steering the plant. This one's about whether the plant can do anything with the steering at all.

The biology, briefly

65–75°F substrate is the root-function plateau. Nutrient uptake, root respiration, water transport — all running at design.
75–77°F — uptake of K, Mg, Ca starts degrading. The plant can still flower but salt stack risk rises (more EC at the probe than the plant is actually drinking).
≥77°F — root function meaningfully degraded. Pythium / fungal risk rises if there's any moisture in the wrong place. EC rapidly decouples from what the plant takes up.
≥80°F — the root system is in damage mode. Most cultivars show stunted lateral growth, bronzing, loss of internode pull-down.

Why early flower is the worst place to have this

Early flower is when the plant is supposed to receive the generative signal — fewer / larger irrigation shots, EC ramping from 3 → 6, substrate concentration intentionally rising. The plant tolerates this because root function is full-throttle. If roots are at 78°F, the EC ramp that's supposed to drive the bulking-phase reservoir instead just stacks at the probe. Six weeks later you read 8 dS/m at the sensor and say "EC is on schedule" — but the plant only got 6.

What to do this week (if HVAC remediation is multi-week)

Operational mitigations (3–7 days)

Check Argus / BMS reading vs AROYA H421 in F6, F8, F13, F16, F17. If AROYA reads 6°F higher than the BMS, the HVAC isn't being asked to cool to the right setpoint.
Drop night setpoint 2°F in the early-flower rooms. Even if HVAC can't hold it, it'll buy a 1°F real drop — and reverse the night-hotter inversion in F8/F17.
Push P1 earlier in early-flower rooms. A larger AM shot at lights-on cools the substrate via evaporation and resets the dryback ceiling before the room heats up.
Cut feed EC by 0.3–0.5 in early flower until substrate temp comes down. You won't get the EC ramp anyway with degraded uptake; lower feed reduces the salt stack at the probe.
Audit zone 72544 (F13) physically. 80.9°F is either a localized heat source (duct, light, slab against wall) or a probe placement issue. Cheapest fix in the facility.

Structural fixes (multi-week)

HVAC capacity audit — is the dehumid / cooling stack sized for current simultaneous-flower-room count? The hot-room cluster grows when more rooms are in flower.
Return air balancing in the hot rooms. F6 has been hot for 30+ days; either it always was or something shifted.
Substrate-side cooling — chilled water, slab-cooling, or just isolating drippers from radiant heat. Most labs ignore this; for a facility your size it pays back.
Crop schedule sequencing — if HVAC is the limit, splitting flips so 6 rooms are in Week 1–2 simultaneously (current state) becomes 3 rooms.
The 4/20 dehumidification CapEx conversation is the pre-existing trail on this. Worth pulling that quote back up against today's data.

Room-by-room (full-window detail)

Phase target legend: in in-band · near within 15% of band edge · out outside band. Targets adapt to the room's actual day-in-cycle and AROYA SPA phase tag.

Flower 2 CRITICAL Week 8 Generative · D55 1764 plants

F 2 3/12-5/11 · flip 2026-03-04 · expected harvest 2026-05-03 · phase target band: Ripening

Read: pore EC zone max 12.1 dS/m (severe stack)

Air day

74.8°F

target 63–70°F

Air night

75.2°F

target 60–70°F

Sub temp avg

70.3°F

target 65–75°F

Sub temp max

71.4°F

target 0–77°F

VPD day

1.3

target 1–1.3

VPD night

1.4

target 1.1–1.4

RH day

56%

target 40–55%

CO₂ day

1020

target 800–1000

VWC mean

50.4%

target 45–55%

Pore EC

7.0

target 7–9

Avg dryback

13.0%

target 30–45%

Avg shots/d

2.0

target 2–5

Pore EC hot zones: z72469=12.05 · z72495=11.28 · z72496=9.36 dS/m Substrate temp hot zones: z72498=74.2°F · z72468=72.2°F · z72496=71.7°F

Flower 3 WATCH Bulking/Vegetative 2 · D28 1836 plants

F 3 3/31-5/30 · flip 2026-03-31 · expected harvest 2026-05-30 · phase target band: Mid flower / Bulking

Read: substrate zone max 75.5°F (uptake degrading)

Air day

79.5°F

target 75–80°F

Air night

79.4°F

target 65–75°F

Sub temp avg

73.6°F

target 65–75°F

Sub temp max

75.5°F

target 0–77°F

VPD day

1.4

target 1–1.2

VPD night

1.4

target 0.8–1.2

RH day

59%

target 55–65%

CO₂ day

1364

target 1200–1500

VWC mean

48.4%

target 50–65%

Pore EC

5.2

target 6–8

Avg dryback

14.3%

target 15–30%

Avg shots/d

1.5

target 6–10

Pore EC hot zones: z72500=7.94 · z72499=6.70 · z72501=6.62 dS/m Substrate temp hot zones: z72499=77.1°F · z72501=76.7°F · z72470=76.1°F

Flower 4 OK Bulking/Vegetative 2 · D40 1836 plants

F 4 3/19-5/18 · flip 2026-03-19 · expected harvest 2026-05-18 · phase target band: Mid flower / Bulking

Read: all key metrics inside phase band — no action needed.

Air day

77.4°F

target 75–80°F

Air night

76.3°F

target 65–75°F

Sub temp avg

73.4°F

target 65–75°F

Sub temp max

74.5°F

target 0–77°F

VPD day

1.1

target 1–1.2

VPD night

1.0

target 0.8–1.2

RH day

66%

target 55–65%

CO₂ day

1540

target 1200–1500

VWC mean

47.2%

target 50–65%

Pore EC

5.3

target 6–8

Avg dryback

15.9%

target 15–30%

Avg shots/d

2.0

target 6–10

Pore EC hot zones: z72503=8.18 · z72472=7.67 · z72473=7.21 dS/m Substrate temp hot zones: z72473=75.7°F · z72503=75.7°F · z72506=75.4°F

Flower 5 WATCH Ripening/Generative 2 · D54 1744 plants

F 5 3/5-5/4 · flip 2026-03-05 · expected harvest 2026-05-04 · phase target band: Ripening

Read: pore EC zone max 9.9 dS/m

Air day

75.4°F

target 63–70°F

Air night

74.1°F

target 60–70°F

Sub temp avg

70.5°F

target 65–75°F

Sub temp max

71.6°F

target 0–77°F

VPD day

1.4

target 1–1.3

VPD night

1.1

target 1.1–1.4

RH day

55%

target 40–55%

CO₂ day

1682

target 800–1000

VWC mean

53.9%

target 45–55%

Pore EC

6.1

target 7–9

Avg dryback

15.9%

target 30–45%

Avg shots/d

0.5

target 2–5

Pore EC hot zones: z72510=9.92 · z72509=8.83 · z72475=7.09 dS/m Substrate temp hot zones: z72474=72.6°F · z72510=72.5°F · z72508=71.9°F

Flower 6 CRITICAL Bulking/Vegetative 2 · D39 2064 plants

F 6 3/20-5/19 · flip 2026-03-20 · expected harvest 2026-05-19 · phase target band: Mid flower / Bulking

Read: 4/20 escalation unresolved (chronic) · substrate zone max 76.6°F (uptake degrading) · air 81.3°F day · VPD day 1.66 kPa

Air day

81.3°F

target 75–80°F

Air night

79.8°F

target 65–75°F

Sub temp avg

74.8°F

target 65–75°F

Sub temp max

76.6°F

target 0–77°F

VPD day

1.7

target 1–1.2

VPD night

1.5

target 0.8–1.2

RH day

55%

target 55–65%

CO₂ day

1688

target 1200–1500

VWC mean

50.6%

target 50–65%

Pore EC

6.3

target 6–8

Avg dryback

16.2%

target 15–30%

Avg shots/d

1.5

target 6–10

Pore EC hot zones: z72514=8.95 · z72476=8.44 · z72477=8.13 dS/m Substrate temp hot zones: z72513=78.1°F · z72476=77.8°F · z72514=77.7°F

Flower 7 WATCH Week 6 Generative · D42 1650 plants

F 7 3/17-5/16 · flip 2026-03-17 · expected harvest 2026-05-16 · phase target band: Late flower

Read: substrate zone max 76.0°F (uptake degrading) · air 80.4°F day · VPD day 1.53 kPa

Air day

80.4°F

target 68–75°F

Air night

80.2°F

target 60–72°F

Sub temp avg

74.8°F

target 65–75°F

Sub temp max

76.0°F

target 0–77°F

VPD day

1.5

target 0.9–1.3

VPD night

1.5

target 1.1–1.4

RH day

57%

target 45–60%

CO₂ day

1464

target 1200–1500

VWC mean

51.0%

target 50–65%

Pore EC

6.5

target 6–7

Avg dryback

13.1%

target 20–35%

Avg shots/d

1.5

target 3–6

Pore EC hot zones: z72479=8.33 · z72515=8.20 · z72478=8.04 dS/m Substrate temp hot zones: z72516=77.1°F · z72479=76.6°F · z72478=76.4°F

Flower 8 CRITICAL Week 1 Generative · D7 1630 plants

F 8 4/21-6/20 · flip 2026-04-21 · expected harvest 2026-06-20 · phase target band: Early flower / Generative

Read: substrate zone max 78.5°F (past 77°F red line) · substrate avg 77.4°F · air 82.2°F day

Air day

82.2°F

target 78–82°F

Air night

82.4°F

target 65–75°F

Sub temp avg

77.4°F

target 65–75°F

Sub temp max

78.5°F

target 0–77°F

VPD day

1.4

target 0.7–1

VPD night

1.4

target 0.8–1.1

RH day

63%

target 60–72%

CO₂ day

1173

target 1000–1200

VWC mean

37.7%

target 45–65%

Pore EC

3.8

target 3–8

Avg dryback

12.3%

target 25–40%

Avg shots/d

1.5

target 2–5

Pore EC hot zones: z72521=5.57 · z72520=4.81 · z72481=4.64 dS/m Substrate temp hot zones: z72481=79.8°F · z72521=79.6°F · z72519=79.0°F

Flower 9 WATCH Bulking/Vegetative 2 · D40 1272 plants

F 9 3/19-5/18 · flip 2026-03-19 · expected harvest 2026-05-18 · phase target band: Mid flower / Bulking

Read: pore EC zone max 10.1 dS/m

Air day

76.3°F

target 75–80°F

Air night

76.2°F

target 65–75°F

Sub temp avg

71.8°F

target 65–75°F

Sub temp max

73.7°F

target 0–77°F

VPD day

1.2

target 1–1.2

VPD night

1.2

target 0.8–1.2

RH day

62%

target 55–65%

CO₂ day

1164

target 1200–1500

VWC mean

48.2%

target 50–65%

Pore EC

7.3

target 6–8

Avg dryback

18.9%

target 15–30%

Avg shots/d

2.0

target 6–10

Pore EC hot zones: z72525=10.09 · z72526=9.55 · z72482=8.34 dS/m Substrate temp hot zones: z72526=75.3°F · z72527=74.7°F · z72525=74.3°F

Flower 10 CRITICAL Week 2 Generative · D19 1650 plants

F 10 4/9-6/8 · flip 2026-04-09 · expected harvest 2026-06-08 · phase target band: Early flower / Generative

Read: substrate zone max 78.1°F (past 77°F red line) · substrate avg 75.8°F (uptake degrading) · air 80.2°F day · VPD day 1.52 kPa

Air day

80.2°F

target 78–82°F

Air night

79.2°F

target 65–75°F

Sub temp avg

75.8°F

target 65–75°F

Sub temp max

78.1°F

target 0–77°F

VPD day

1.5

target 0.7–1

VPD night

1.1

target 0.8–1.1

RH day

57%

target 60–72%

CO₂ day

1583

target 1000–1200

VWC mean

40.8%

target 45–65%

Pore EC

5.7

target 3–8

Avg dryback

16.7%

target 25–40%

Avg shots/d

2.5

target 2–5

Pore EC hot zones: z72532=8.34 · z72531=7.70 · z72529=6.81 dS/m Substrate temp hot zones: z72529=79.3°F · z72483=78.4°F · z72528=78.3°F

Flower 11 WATCH Bulking/Vegetative 2 · D21 1650 plants

F 11 4/7-6/6 · flip 2026-04-07 · expected harvest 2026-06-06 · phase target band: Early flower / Generative

Read: substrate zone max 75.8°F (uptake degrading) · substrate avg 75.1°F (uptake degrading)

Air day

79.5°F

target 78–82°F

Air night

80.0°F

target 65–75°F

Sub temp avg

75.1°F

target 65–75°F

Sub temp max

75.8°F

target 0–77°F

VPD day

1.3

target 0.7–1

VPD night

1.5

target 0.8–1.1

RH day

62%

target 60–72%

CO₂ day

1589

target 1000–1200

VWC mean

44.2%

target 45–65%

Pore EC

5.5

target 3–8

Avg dryback

16.1%

target 25–40%

Avg shots/d

2.0

target 2–5

Pore EC hot zones: z72533=8.10 · z72484=7.69 · z72537=7.43 dS/m Substrate temp hot zones: z72534=76.4°F · z72535=76.4°F · z72484=76.3°F

Flower 12 WATCH Ripening/Generative 2 · D49 1272 plants

F 12 3/12-5/11 · flip 2026-03-10 · expected harvest 2026-05-09 · phase target band: Late flower

Read: pore EC zone max 10.2 dS/m

Air day

74.0°F

target 68–75°F

Air night

75.7°F

target 60–72°F

Sub temp avg

70.6°F

target 65–75°F

Sub temp max

70.9°F

target 0–77°F

VPD day

1.2

target 0.9–1.3

VPD night

1.6

target 1.1–1.4

RH day

59%

target 45–60%

CO₂ day

1488

target 1200–1500

VWC mean

50.4%

target 50–65%

Pore EC

6.7

target 6–7

Avg dryback

17.4%

target 20–35%

Avg shots/d

2.0

target 3–6

Pore EC hot zones: z72538=10.17 · z72540=9.39 · z72539=8.73 dS/m Substrate temp hot zones: z72539=72.2°F · z72538=72.1°F · z72541=71.7°F

Flower 13 CRITICAL Week 1 Generative · D12 1800 plants

F 13 4/16-6/15 · flip 2026-04-16 · expected harvest 2026-06-15 · phase target band: Early flower / Generative

Read: substrate zone max 79.0°F (past 77°F red line)

Air day

79.2°F

target 78–82°F

Air night

79.8°F

target 65–75°F

Sub temp avg

75.0°F

target 65–75°F

Sub temp max

79.0°F

target 0–77°F

VPD day

1.5

target 0.7–1

VPD night

0.9

target 0.8–1.1

RH day

57%

target 60–72%

CO₂ day

1377

target 1000–1200

VWC mean

44.0%

target 45–65%

Pore EC

3.6

target 3–8

Avg dryback

10.4%

target 25–40%

Avg shots/d

2.0

target 2–5

Pore EC hot zones: z72486=7.95 · z72544=6.35 · z72545=4.46 dS/m Substrate temp hot zones: z72544=80.9°F · z72543=80.6°F · z72546=79.2°F

Flower 14 WATCH Week 6 Generative · D47 1496 plants

F 14 3/12-5/11 · flip 2026-03-12 · expected harvest 2026-05-11 · phase target band: Late flower

Read: pore EC zone max 10.3 dS/m

Air day

74.6°F

target 68–75°F

Air night

75.0°F

target 60–72°F

Sub temp avg

70.7°F

target 65–75°F

Sub temp max

71.4°F

target 0–77°F

VPD day

1.2

target 0.9–1.3

VPD night

0.9

target 1.1–1.4

RH day

58%

target 45–60%

CO₂ day

1650

target 1200–1500

VWC mean

50.0%

target 50–65%

Pore EC

6.1

target 6–7

Avg dryback

15.5%

target 20–35%

Avg shots/d

1.0

target 3–6

Pore EC hot zones: z72552=10.32 · z72551=8.99 · z72549=8.19 dS/m Substrate temp hot zones: z72548=72.9°F · z72552=72.3°F · z72487=72.3°F

Flower 16 CRITICAL Week 2 Generative · D14 1836 plants

F 16 4/14-6/13 · flip 2026-04-14 · expected harvest 2026-06-13 · phase target band: Early flower / Generative

Read: substrate zone max 78.2°F (past 77°F red line) · substrate avg 76.8°F (uptake degrading) · air 81.6°F day

Air day

81.6°F

target 78–82°F

Air night

81.7°F

target 65–75°F

Sub temp avg

76.8°F

target 65–75°F

Sub temp max

78.2°F

target 0–77°F

VPD day

1.4

target 0.7–1

VPD night

1.4

target 0.8–1.1

RH day

62%

target 60–72%

CO₂ day

1552

target 1000–1200

VWC mean

42.3%

target 45–65%

Pore EC

4.7

target 3–8

Avg dryback

18.1%

target 25–40%

Avg shots/d

2.5

target 2–5

Pore EC hot zones: z72557=7.06 · z72553=6.72 · z72555=6.00 dS/m Substrate temp hot zones: z72554=79.9°F · z72488=79.6°F · z72553=78.7°F

Flower 17 CRITICAL Week 1 Generative · D5 1178 plants

F 17 4/23-6/22 · flip 2026-04-23 · expected harvest 2026-06-22 · phase target band: Early flower / Generative

Read: substrate zone max 78.8°F (past 77°F red line) · substrate avg 77.6°F · air 82.5°F day · VPD day 1.63 kPa

Air day

82.5°F

target 78–82°F

Air night

83.3°F

target 65–75°F

Sub temp avg

77.6°F

target 65–75°F

Sub temp max

78.8°F

target 0–77°F

VPD day

1.6

target 0.7–1

VPD night

1.6

target 0.8–1.1

RH day

57%

target 60–72%

CO₂ day

1321

target 1000–1200

VWC mean

38.9%

target 45–65%

Pore EC

2.9

target 3–8

Avg dryback

13.4%

target 25–40%

Avg shots/d

1.0

target 2–5

Pore EC hot zones: z72648=4.06 · z72644=3.87 · z72647=3.78 dS/m Substrate temp hot zones: z72644=79.9°F · z72645=79.5°F · z72646=79.4°F

Flower 18 WATCH Bulking/Vegetative 2 · D26 1488 plants

F 18 4/2-6/1 · flip 2026-04-02 · expected harvest 2026-06-01 · phase target band: Mid flower / Bulking

Read: substrate zone max 77.6°F (uptake degrading) · substrate avg 75.9°F (uptake degrading) · air 80.6°F day · pore EC zone max 9.4 dS/m

Air day

80.6°F

target 75–80°F

Air night

79.7°F

target 65–75°F

Sub temp avg

75.9°F

target 65–75°F

Sub temp max

77.6°F

target 0–77°F

VPD day

1.4

target 1–1.2

VPD night

1.2

target 0.8–1.2

RH day

62%

target 55–65%

CO₂ day

1596

target 1200–1500

VWC mean

48.2%

target 50–65%

Pore EC

6.0

target 6–8

Avg dryback

16.0%

target 15–30%

Avg shots/d

1.5

target 6–10

Pore EC hot zones: z72651=9.38 · z72650=8.68 · z72490=7.32 dS/m Substrate temp hot zones: z72650=78.6°F · z72653=78.4°F · z72651=78.3°F

Carry-overs from prior sessions

Re-checked against current data where possible. Items not in the sensor data still carried for the meeting.

Argus / BMS vs AROYA temperature mismatch (4/20) — RECONFIRMED. The fact that F6 has not cooled in 14 days, and that every newly-flipped room runs 80–82°F, suggests AROYA and the BMS are reading different setpoints. This is the highest-leverage diagnostic action this week.
Dehumidification CapEx (4/20) — STILL APPLICABLE. The hot-room cluster expanding as more rooms enter early flower simultaneously is exactly what a HVAC capacity bottleneck looks like.
Strawberry Glue / McGilligoo foxtailing — UNVERIFIED. We don't have cultivar→room mapping in this pull. Worth asking which of F11 (D21) and F14 (D47, EC z72552=10.32) are running those genetics. F2 D55 EC z72469=12.05 is also a phase that foxtailing would show in.
1-gal pot dryback behavior — PARTIAL READ. F8 D7 dryback 12.3%, F13 D12 dryback 10.4%, F17 D5 dryback 13.4% — early flower drybacks are shallow, but these are also new flips with low canopy water demand. Will be more diagnostic at D14+. F9's 18.9% dryback (post-pivot) shows what a healthy bulking dryback looks like for context.
Generative pivot in F9 (4/20 recommendation) — LANDED. VWC dropped 60.8 → 48.2, dryback opened to 18.9% (best in facility), EC ramped 6.39 → 7.3. The 4/20 plan worked. Hot-spot zone z72525 is still hot at 10.09 — physical inspection still warranted, but room-level steering is on.
F12 ripening EC drift (4/20) — CONTINUING. z72540 was 10.78; today z72538 = 10.17, z72540 = 9.39. Ripening progressed without an explicit flush. With harvest 5/9 at D49 currently, the drift will end on its own — but watch for tip burn / early senescence in the high-EC zones.
Flower 6 escalation (4/20 acute) — UNRESOLVED. See hot-room cluster section.
Plastic pots / 1.5-gal trial / reduced plant count / two drippers / stronger plenum fans / 2°F night drop / 20–25% dryback on Strawberry Glue — STATUS UNKNOWN. Carrying these forward; please correct anything resolved or superseded.

Methods & caveats

Data sources

AROYA MCP — list_rooms (facility 4537), spa_list_harvest_groups (active HG metadata: flip, harvest, phase, day-in-cycle, plant count), get_facility_overview (24h baseline), get_room_history (14-day per-zone hourly bins, 16 flower rooms × ~41 series per room).
14 days of 1h-binned mean/min/max for soil_moist, soil_temp, pore_ec, air_temp, vpd, rel_hum, co2, abs_hum.
Comparison baseline: 2026-04-20 client report (24h facility-overview averages from 2026-04-20).

Photoperiod assumption

Lights-on 06:00 PDT (13:00 UTC) → lights-off 18:00 PDT (01:00 UTC). Day = UTC hours {13–23, 0}, night = UTC hours {2–11}. Transition hours 12 and 1 excluded. Verify against actual schedule — if Vangarden runs a different photoperiod, day/night splits in this report shift accordingly.

What this report does NOT contain

Cultivar → room mapping. spa_list_harvest_groups returned cultivar IDs but not names in this pull. Strawberry Glue / McGilligoo follow-through is gated on this.
Per-device battery / RSSI / gap statistics — not pulled in this run; the prior 4/20 device fleet inventory (623 devices) still applies barring fleet changes. Worth a follow-up off-hours run.
Yield context for finishing rooms. F2 / F5 / F12 are within days of harvest; their dry weights vs targets aren't in scope here.
Drip / drain EC differential. dfi / dfi_drain / pore_ec_drip / pore_ec_drain are the diagnostic for whether the facility's EC stack is feed-side, runoff-side, or substrate-side. Not pulled this session.

Phase-target sources

AROYA crop-steering target table (LED cultivation). Early flower (Wk1–3): VPD 0.7–1.0 day, dryback 25–40%, EC 3–8 ramping. Mid bulking (Wk4–5): VPD 1.0–1.2, dryback 15–30%, EC 6–8. Late flower (Wk6–7): VPD 0.9–1.3, dryback 20–35%, EC 6–7. Ripening (Wk8–9): VPD 1.0–1.3, dryback 30–45%, EC 7–9. Substrate temp 65–75°F all phases (75°F threshold, 77°F red line).

Generated 2026-04-28 · Vangarden facility 4537 · 14-day window · 16 active flower runs · Phase-aware scoring against AROYA LED targets · See "What changed" section for follow-through against the 2026-04-20 client report.