What This Chart Shows
This chart models monthly per-channel profit across two key variables: days to harvest (x-axis) and channel weight — the yield in lbs per channel per harvest cycle (each labelled line).
How to Read It
Each line represents a fixed channel weight (1.25 – 4.50 lbs/channel by default). Moving left to right along any line increases harvest time from 15 to 30 days. The y-axis shows resulting monthly profit per channel. Dots mark the key harvest-time checkpoints (15, 20, 25, 30 days).
Profit Formula
Profit = (30.5 / days) × lbs/ch × Price/lb
− (30.5 / days) × VC − FC
Where VC = variable cost per harvest cycle, FC = fixed cost per month, and Price/lb = Price/oz × 16.
Key Insights
- Channel weight dominates. Moving from 1.25 to 4.50 lbs/ch roughly triples profit regardless of harvest time.
- Faster cycles help, but with diminishing returns. Shorter harvest times increase cycle frequency, boosting revenue — but fixed costs are unaffected, so the gain narrows at higher weights.
- Baseline (RL): 15-day cycle, 1.25 lbs/ch → ~$6.00/mo profit.
- Target (GL): 28-day cycle, 4.0 lbs/ch → ~$22.00/mo profit. Despite fewer cycles, the heavier yield more than compensates.
- Lines converge as harvest time increases — high-weight varietals are more resilient to slow growth than low-weight ones.
Practical Takeaway
Selecting a varietal with higher channel weight (e.g. 3.5–4.5 lbs/ch) delivers a much larger profit improvement than optimising harvest speed alone. Speed matters most for lightweight varietals where fixed costs represent a larger share of revenue.
Mix Configuration
Real-world operations typically run a blend of varietals. The Mix line (dashed red) shows the weighted-average profit of your configured blend. Set each component’s channel weight (lbs/ch) and share (%) — shares must sum to 100%.
Example: 50% at 4.50 lbs/ch (premium), 25% at 3.00 lbs/ch, 25% at 1.70 lbs/ch (filler).
Risk watch: Lower-yield, short-cycle varieties erode gross margin. Watch how the blend profit and GM% shift as more lightweight varieties are added. The stats panel shows blend profit, gross margin, and per-channel profit erosion versus a pure-premium strategy.
Field Use
Click 
Settings in the header to toggle the controls panel. Once parameters are set, collapse it to display the clean chart full-width.
Interactive Controls
- Price/oz — wholesale price. Shifts all lines proportionally; highest leverage on lightweight varietals.
- Variable Cost (VC) — cost per harvest cycle (nutrients, labour). Higher VC compresses profits faster at short cycle times.
- Fixed Cost (FC) — monthly overhead per channel. Flat offset; largest relative impact on low-revenue varietals.
- Min / Max Channel Weight — range of varietal lines displayed.
- Lines Shown — number of evenly spaced lines between min and max weight.