Fall Fertilizer

Once weekly from late summer to first frost, dosing by size: 1 Tbs (15mL) per gallon for plants under 12", 2 Tbs (30mL) per gallon for taller. A hose end sprayer set to those rates handles lawns and beds. The window matters as much as the product — start as summer growth slows, and stop when frost arrives rather than feeding into winter.

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.

It can, if applied too late to woody plants — nitrogen pushes soft new growth that won't harden before a freeze. That's why the label defines a window ending at first frost, not extending through it. For lawns and perennials, fall feeding is standard practice and highly effective. For shrubs and trees in cold climates, favor the earlier part of the window, and stop several weeks ahead of your typical first hard freeze.

The analysis is the same balanced 10-10-10; the difference is when and how you use it. Fall feeding targets storage rather than growth — roots stay active in warm soil after top growth stops, banking reserves for spring. The size-based dosing and weekly late-summer-to-frost schedule on this label are built for that window, where a growing-season product runs from spring through summer instead.

Fall is arguably the best time to feed cool-season lawns — fescue, bluegrass, and ryegrass do their strongest root growth in autumn, and what they build then determines spring density. Apply through the window with a hose end sprayer at the label rate. Warm-season lawns like bermuda and zoysia are the exception: they head into dormancy, so heavy fall nitrogen does little and can invite winter injury.

On cool-season crops still growing — kale, chard, spinach, garlic, and overwintering onions — yes, it feeds active growth right through the window. On summer crops finishing up, feeding won't extend a tomato's productive life; the plant is ending its cycle. Better to spend the late-season effort on the beds themselves, so soil and any overwintering plantings enter spring in better shape.

Mostly next spring, which is the point. Half the nitrogen is nitrate for immediate uptake, so lawns and late-season foliage green up within 1-2 weeks, but the main work is invisible: potassium and phosphorus moving into roots and crowns through fall. The payoff shows at spring emergence — earlier green-up, denser lawns, perennials coming back stronger than they went down.