Moisture Factor You need to add ¼ to ½ inch of water to your lawn in the 24 hours immediately following fertilizer application. You then need to allow up to 48 hours for the fertilizer to soak into the soil. Rain, though, can substitute for watering.Click to see full answer. Keeping this in consideration, is it OK to put fertilizer down before rain? Using Fertilizer Before Rain It’s fine to spread your fertilizer before it rains as long as it’s more mild or light conditions. Of course, water is important for plant growth and is similarly important to helping the fertilizer’s nutrients break down and get absorbed through the roots.Likewise, should I water after applying liquid fertilizer? According to the University of California College of Agriculture and Natural Resources, you should water deeply a few days before application and water immediately after application to remove any fertilizer granules from the leaf blades and get them to the soil. Subsequently, question is, how long does it take liquid fertilizer to work? Gone in Two Weeks Liquid fertilizer formulations vary, but because the plant’s roots take the nutrients up quickly, their effect on the soil only lasts one to two weeks.What happens if it rains after fertilizing?Heavy rain in very Sandy light soils immediately after fertilizer is usually a bad thing because it flushes the fertilizer out of soil and into streams and rivers this is especially true with nitrogen fertilizers less true with phosphorus and potash.

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