Watermelon Fertilizer

Every one to two weeks from vining until the first fruit reaches softball size, then cut back so the plant puts its energy into sweetening rather than more vine.

At 1 tsp per quart, the 8 oz bottle makes about 48 watering cans of feed. For a typical shelf of 10–15 plants fed every 1–2 weeks in season, that's several months of feeding — and the 32 oz bottle four times that.

Every 1–2 weeks in spring and summer while it is actively growing, then every 4 weeks in fall and winter. Mix it into your regular watering at the labeled dilution so feeding never becomes a separate chore.

Poor pollination or stress during fruit set. Keep the plant evenly watered and fed, and hand-pollinate female flowers in the morning if bees are scarce.

Yes. Use the same dilution for both — a watering can for containers and small beds, a hose-end sprayer set to the labeled rate for larger in-ground plants.

Not when used as directed. The dilution is designed for regular feeding, and a liquid spreads evenly through the soil instead of sitting in a hot spot the way granules can. If you ever overdo it, flush with plain water.

Greener leaves and stronger new growth show within a few weeks; the flowering and fruiting benefits build over the season and are most visible at the next harvest.