Boxwood Fertilizer

Every 1–2 weeks during spring and summer while they're actively growing, and every 4 weeks in fall and winter. Diluting into your regular watering (2 Tbs per gallon) keeps nutrition steady — this is especially useful for sheared hedges and topiary, which need consistent feeding to fill back in evenly after cutting.

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.

Some winter bronzing is normal and greens up in spring, but persistent yellowing or orange discoloration usually means iron or magnesium shortfall, or cold and wind stress. Both nutrients are in the formula, and steady feeding with the potassium-driven hardiness helps the plant resist bronzing. New growth should come in deep green within a few weeks.

Feed through spring and summer to support the flushes of growth you'll shear into shape, and time shearing so the plant has feeding and growing season left to recover and fill in. Ease off feeding in late fall — pushing tender growth before winter leaves boxwood vulnerable to cold damage and bronzing.

No — at the directed dilution, the formula is designed for regular use. All-nitrate nitrogen and low salt concentration make burn very unlikely, even on young plants and freshly sheared hedges. For newly planted boxwoods still establishing, start at half strength for the first two feedings.

New growth typically comes in greener within the first few weeks of feeding during the growing season. Because boxwood grows slowly and densely, filling in a thin hedge or bare spot takes a full season or more of consistent feeding — color improves first, density follows.