For vegetable bulbs like onions, shallots and onions, I rotate raised beds every year. As for flower bulbs, I usually rotate between bulbs and annual flowers grown from seed in containers. When I plant any bulbs in the fall or spring, I like to add one of the following soil additives:
1) My first choice is used coffee grounds which are a great source of potassium, phosphorus and calcium. Plus they are free and a great way to recycle! If you don’t drink coffee like me, then ask your local coffee shop for some. I would sprinkle some used coffee grounds on top after I planted the bulbs.
2) Next choice, I would sprinkle some organic bone meal on top after I planted the bulbs. Bone meal is loaded with phosphate and calcium. It is recommended that bone meal is sprinkled above ground.
3) Another choice is a slow release plant food like organic Bulb-tone by Espoma. It is a great source of potassium, potash and calcium. For new plantings, Bulb-tone should be incorporated into the soil below the bulbs so it directly feeds the roots.
We previously discussed Garden Soil.
