If you’ve already sown your seeds or planted seedlings, you can still gently work in granular fertilizer (not liquid fertilizer , which can burn young roots) around the plants. Skip fertilizing perennials, trees, and shrubs to avoid frost-damaged growth. · learn whether to fertilize your fall vegetable garden with expert guidance on rates, timing, and options. · the ideal time to fertilize your vegetable garden in the fall is about 4-6 weeks before the first expected frost. This gives the soil time to absorb the nutrients before winter sets in. Raw manure is cheap, and you need to leave it on top of the soil, on the surface, for at least 3 months, so you cannot lay it in spring. A fertilizer with a balanced n-p-k (nitrogen-phosphorus-potassium) ratio, such as 10-10-10, provides essential nutrients that support root development and overall plant health. · discover the best ways to fertilize a vegetable garden in the fall , including using feeds, mulches, and cover crops to add nutrients into the soil Add compost in the fall to enrich the soil and prep it for next year’s crops. · key takeaways fertilize fall veggies in late summer , but stop once autumn fully sets in. · for edible crops, fertilizer is usually applied in the spring and mixed into the garden soil before planting. · in fall , you can fertilize with both raw and mature manure; When fertilizing your garden in fall , it’s typically best to choose a slow-release or balanced fertilizer.