FoxFarm Feeding Schedule

About FoxFarm

FoxFarm is a family company out of Humboldt County, and the Trio — Big Bloom, Grow Big and Tiger Bloom — is probably the most widely used starter program in the country. It is cheap, it is available everywhere, and it works: an earthworm-castings-and-bat-guano base for gentle feeding, a high-nitrogen veg bottle, and a phosphorus-heavy bloom bottle.

The soils are the other half of the business. Ocean Forest comes hot and pre-charged, so seedlings usually need nothing for the first few weeks; Happy Frog is milder and better for transplanting into. Knowing which bag you are in changes the feed schedule completely, which is the single most common FoxFarm mistake we see.

The feed chart

Soil Feeding Schedule

Download the FoxFarm Soil Feeding Schedule (PDF)

FoxFarm Soil — FoxFarm Soil Feeding Schedule (PDF)
Feed Seedling Veg Flower
Week 1 2 3 4 5 6 7 8 9 10 11 12
Growth stage Seedlings & Cuttings Vegetative (18 hr light) Vegetative (18 hr light) Vegetative (18 hr light) Vegetative (18 hr light) Flowering (12 hr light) Flowering (12 hr light) Flowering (12 hr light) Flowering (12 hr light) Flowering (12 hr light) Flowering (12 hr light) Flowering (12 hr light) Flowering (12 hr light)
Big Bloom 6 tsp 6 tsp 6 tsp 6 tsp 3 tsp 3 tsp 3 tsp 3 tsp 3 tsp 3 tsp 3 tsp 3 tsp 3 tsp
Grow Big — — 1 tsp 2 tsp 2 tsp 2 tsp 2 tsp 2 tsp 2 tsp 1 tsp — — —
Tiger Bloom — — — — — 1 tsp 1 tsp 1 tsp 2 tsp 2 tsp 2 tsp 2 tsp 1 tsp
Cal-Mag — — 1 tsp 1 tsp 1 tsp 1 tsp 1 tsp 1 tsp 1 tsp 1 tsp — — —
Boomerang 1 tsp 1 tsp 1 tsp 1 tsp 1 tsp 1 tsp 1 tsp 1 tsp — — — — —
Kangaroots 1/2 tsp 1 tsp 1 tsp — 1 tsp — 1 tsp — — — — — —
Microbe Brew — — 1 tsp 1 tsp — 1 tsp — 1 tsp — 1 tsp — — —
Wholly Mackerel 1/2 tsp 1/2 tsp 1/2 tsp 1/2 tsp 1/2 tsp — — — — — — — —
Kelp Me Kelp You — — — 1 tsp 1 tsp 1 tsp 1 tsp 1 tsp 1 tsp 1 tsp — — —
Bembé — — — — — — — — 3 tsp 3 tsp 3 tsp 3 tsp 3 tsp
Open Sesame — — — — 1/4 tsp 1/4 tsp 1/4 tsp — — — — — —
Beastie Bloomz — — — — — — — 1/4 tsp 1/4 tsp — — — —
Cha Ching — — — — — — — — — 1/4 tsp 1/4 tsp 1/4 tsp 1/4 tsp
Target EC 1.00-1.20 1.10-1.30 1.70-2.10 2.60-3.00 2.40-2.80 2.50-2.90 2.50-2.90 2.60-3.00 3.40-3.80 3.00-3.40 2.10-2.50 1.80-2.20 1.40-1.80
Target PPM (700 scale) 700-840 770-910 1190-1470 1820-2100 1680-1960 1750-2030 1750-2030 1820-2100 2380-2660 2100-2380 1470-1750 1260-1540 980-1260

FoxFarm’s own chart repeats a “Flush with SledgeHammer” reminder across the schedule rather than tying it to one numbered week — run a plain-water flush (with SledgeHammer at the rate printed on its own label) between reservoir/soil-drench changes, and always before extending a cycle past week 4 (veg) or week 12 (flower). Figures as published by FoxFarm. A dash means the chart calls for nothing that week. Feeding charts are recommendations only — adjust for your environment, media and any other products you run.

Hydroponic Feeding Schedule

Download the FoxFarm Hydroponic Feeding Schedule (PDF)

FoxFarm Hydroponic — FoxFarm Hydroponic Feeding Schedule (PDF)
Feed Seedling Veg Flower
Week 1 2 3 4 5 6 7 8 9 10 11 12
Growth stage Seedlings & Cuttings Vegetative (18 hr light) Vegetative (18 hr light) Vegetative (18 hr light) Vegetative (18 hr light) Flowering (12 hr light) Flowering (12 hr light) Flowering (12 hr light) Flowering (12 hr light) Flowering (12 hr light) Flowering (12 hr light) Flowering (12 hr light) Flowering (12 hr light)
Big Bloom 2 tsp 3 tsp 3 tsp 3 tsp 3 tsp 3 tsp 3 tsp 3 tsp 3 tsp 4 tsp 4 tsp 4 tsp 4 tsp
Grow Big Hydro 1 tsp 2 tsp 2 tsp 3 tsp 3 tsp 2 tsp 2 tsp 2 tsp 2 tsp 2 tsp 2 tsp 2 tsp 2 tsp
Tiger Bloom — — — — — 1 tsp 1 tsp 1 tsp 1 tsp 1 tsp 1 tsp 1 tsp 1 tsp
Cal-Mag — — 2 tsp 2 tsp 2 tsp 2 tsp 2 tsp 2 tsp 2 tsp 2 tsp 1 tsp — —
Kangaroots 1/2 tsp 1 tsp 1 tsp 1 tsp 1 tsp — — — — — — — —
Microbe Brew — — 1 tsp 1 tsp 1 tsp 1 tsp 1 tsp 1 tsp — 1 tsp — 1 tsp —
Open Sesame — — — — 1/4 tsp 1/4 tsp 1/4 tsp — — — — — —
Beastie Bloomz — — — — — — — 1/4 tsp 1/4 tsp — — — —
Cha Ching — — — — — — — — — 1/4 tsp 1/4 tsp 1/4 tsp 1/4 tsp
Target EC 1.00-1.20 1.60-1.85 2.30-2.70 2.60-2.90 3.00-3.40 2.60-3.00 2.60-3.00 2.80-3.20 2.60-3.00 2.90-3.30 2.70-3.10 2.20-2.60 2.10-2.50
Target PPM (700 scale) 700-840 1120-1295 1610-1890 1820-2030 2100-2380 1820-2100 1820-2100 1960-2240 1820-2100 2030-2310 1890-2170 1540-1820 1470-1750

FoxFarm’s own chart repeats a “Flush with SledgeHammer” reminder across the schedule rather than tying it to one numbered week — run a plain-water flush (with SledgeHammer at the rate printed on its own label) between reservoir/soil-drench changes, and always before extending a cycle past week 4 (veg) or week 12 (flower). Figures as published by FoxFarm. A dash means the chart calls for nothing that week. Feeding charts are recommendations only — adjust for your environment, media and any other products you run.

Happy Frog Feeding Schedule

Download the FoxFarm Happy Frog Feeding Schedule (PDF)

Happy Frog dry soil amendments (scratch into soil, once per week) — FoxFarm Happy Frog Feeding Schedule (PDF)
Feed Seedling Veg Flower
Week 1 2 3 4 5 6 7 8 9 10 11 12
Growth stage Seedlings & Cuttings Vegetative (18 hr light) Vegetative (18 hr light) Vegetative (18 hr light) Vegetative (18 hr light) Flowering (12 hr light) Flowering (12 hr light) Flowering (12 hr light) Flowering (12 hr light) Flowering (12 hr light) Flowering (12 hr light) Flowering (12 hr light) Flowering (12 hr light)
Jump Start — 1 Tbsp 1 Tbsp — — — — — — — — — —
All-Purpose — — — 1½ Tbsp 1½ Tbsp 1½ Tbsp — — — — — — —
Tomato & Vegetable — — — — — — 1 Tbsp 1 Tbsp 1 Tbsp — — — —
Fruit & Flower — — — — — — — — — 1 Tbsp 1 Tbsp 1 Tbsp 1 Tbsp
Cavern Culture — — — 1 Tbsp — 1 Tbsp — 1 Tbsp — — — — —
Happy Frog liquid feed (up to twice per week, per gallon of water) — FoxFarm Happy Frog Feeding Schedule (PDF)
Feed Seedling Veg Flower
Week 1 2 3 4 5 6 7 8 9 10 11 12
Growth stage Seedlings & Cuttings Vegetative (18 hr light) Vegetative (18 hr light) Vegetative (18 hr light) Vegetative (18 hr light) Flowering (12 hr light) Flowering (12 hr light) Flowering (12 hr light) Flowering (12 hr light) Flowering (12 hr light) Flowering (12 hr light) Flowering (12 hr light) Flowering (12 hr light)
Big Bloom 6 tsp 6 tsp 3 tsp 3 tsp 3 tsp 3 tsp 3 tsp 3 tsp 3 tsp 3 tsp 3 tsp 3 tsp 3 tsp
Cal-Mag — — — 1 tsp 1 tsp 1 tsp 1 tsp 1 tsp 1 tsp 1 tsp 1 tsp — —
Kelp Me Kelp You — — — 1/2 tsp 1 tsp 1 tsp 1 tsp 1 tsp 1 tsp 1 tsp 1/4 tsp — —
Wholly Mackerel — 1 tsp 1 tsp 1 tsp 1 tsp — — — — — — — —
Boomerang 1/2 tsp 1 tsp 1 tsp 1 tsp 1 tsp — — — — — — — —
Kangaroots 1/2 tsp 1 tsp 1 tsp 1 tsp 1 tsp 1 tsp — — — — — — —
Microbe Brew 1/2 tsp 1 tsp 1 tsp 1 tsp 1 tsp 1 tsp 1 tsp — — — — — —
Bembé — — — — — — — 3 tsp 3 tsp 3 tsp 3 tsp 3 tsp 3 tsp
Target EC 0.90-1.20 1.10-1.30 1.00-1.20 1.20-1.50 1.30-1.60 1.30-1.60 1.10-1.40 1.50-1.90 1.50-1.90 1.50-1.90 1.10-1.40 1.00-1.20 1.00-1.20
Target PPM (700 scale) 670-840 770-910 700-840 840-1050 910-1120 910-1120 770-980 1050-1330 1050-1330 1050-1330 770-980 700-840 700-840

The dry amendments (Jump Start through Fruit & Flower, plus Cavern Culture) are scratched into the soil surface once per week at the rate shown; the liquid feed table below it is mixed into water and applied up to twice a week, same as the other FoxFarm charts.

FoxFarm’s own chart repeats a “Flush with SledgeHammer” reminder across the schedule rather than tying it to one numbered week — run a plain-water flush (with SledgeHammer at the rate printed on its own label) between reservoir/soil-drench changes, and always before extending a cycle past week 4 (veg) or week 12 (flower). Figures as published by FoxFarm. A dash means the chart calls for nothing that week. Feeding charts are recommendations only — adjust for your environment, media and any other products you run.

Cultivation Nation 3-Part Soil & Hydro Feeding Schedule

Download the FoxFarm Cultivation Nation 3-Part Feeding Schedule (PDF)

Cultivation Nation (soil & hydro, teaspoons per gallon of water) — FoxFarm Cultivation Nation 3-Part Feeding Schedule (PDF)
Feed Seedling Veg Flower
Week 1 2 3 4 5 6 7 8 9 10 11 12
Growth stage Seedlings & Cuttings Vegetative (18 hr light) Vegetative (18 hr light) Vegetative (18 hr light) Vegetative (18 hr light) Flowering (12 hr light) Flowering (12 hr light) Flowering (12 hr light) Flowering (12 hr light) Flowering (12 hr light) Flowering (12 hr light) Flowering (12 hr light) Flowering (12 hr light)
Grow 0.5 tsp 1 tsp 2 tsp 3 tsp 3 tsp 2 tsp 1 tsp 1 tsp 1 tsp — — — —
Micro — — 1.5 tsp 1.5 tsp 1.5 tsp 1 tsp 1 tsp 1 tsp 1 tsp 1 tsp 1 tsp — —
Bloom — — — — 1.5 tsp 2 tsp 3 tsp 3 tsp 3 tsp 3 tsp 3 tsp 3 tsp 2 tsp
Target EC 0.31-0.41 0.5-0.6 1.8-2.0 2.1-2.2 2.4-2.6 2.0-2.2 2.0-2.2 2.0-2.2 2.0-2.2 1.8-1.9 1.8-1.9 1.2-1.4 0.7-0.9
Target PPM (700 scale) 217-287 350-420 1260-1400 1470-1540 1680-1820 1400-1540 1400-1540 1400-1540 1400-1540 1260-1330 1260-1330 840-980 490-630

FoxFarm’s own chart repeats a “Flush with SledgeHammer” reminder across the schedule rather than tying it to one numbered week — run a plain-water flush (with SledgeHammer at the rate printed on its own label) between reservoir/soil-drench changes, and always before extending a cycle past week 4 (veg) or week 12 (flower). Figures as published by FoxFarm. A dash means the chart calls for nothing that week. Feeding charts are recommendations only — adjust for your environment, media and any other products you run.

What we stock

The Trio, the dry Happy Frog amendments, soils, and the Bush Doctor supplements.

Shop FoxFarm

Everything on this schedule, stocked at Milford and Webster.

View all 55 FoxFarm products →