The First Nitrogen Hit for Your Spring Onion Plants: What You Need to Know
Update: 2023-03-18
Description
• Michelle Roberts, host of the Growing in the Good Life podcast, explains how to determine when to fertilize onion plants.
• Depending on the latitude, long day onions require 14 hours of sunlight, while short day onions require 10-12 hours.
• Onions need a boost of nitrogen during their growing process. This can be done by adding a general-purpose fertilizer with potassium and phosphorus at planting time and having regular nitrogen supplements every 2-3 weeks.
• Blood meal is an excellent supplement, providing nitrogen without hurting the plants.
• Once the onions begin to bulb up, no more nitrogen should be added as it will have no effect and may contribute to increased algae in waterways.
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