Beautiful Tops and No Bulb on Bottom

Anonymous added on January 31, 2014 | Answered

Why do my onion sets have beautiful tops and no onion bulb on the bottom? Same thing with radishes - beautiful tops and no radish on the bottom? How can I improve the soil to have a better garden?

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Certified GKH Gardening Expert
Answered on January 31, 2014

This is normally caused by too much nitrogen in the soil and not enough phosphorus. Manure and wood shavings are an excellent source of nitrogen but tends to lack significant amounts of phosphorus. By mixing bone meal fertilizer in with this, you have a more well balanced, organic fertilizer. So try adding some bone meal to the soil when planting root vegetables and this should help with the bulbing.

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