One of the most popular varieties, red apeldoorn tulips offer an iconic image: brilliant red blooms that last for three weeks atop two-foot stems. Those characteristics make the apeldoorn eye-catching in summer bouquets and in the garden. While easy to grow, the bulbs need to be dug out of the ground once their foliage has died and replanted in the fall. As a result, planting is the key to their successful growth.
Amend virgin soil with a 4-inch layer of aged compost and till to a depth of 4 inches below the original ground level. If planting apeldoorns in an existing flower bed, there is no need to amend the soil.
Dig a 7-inch deep trench, instead of several individual holes, to save time in the process: Tulips are traditionally planted in groups. The width of the trench depends on the number of bulbs being planted. Bulbs should be placed 5 inches apart.
Place the apeldoorn tulip bulbs in the holes or trenches. Though the bulbs have a distinctive flat bottom, pointed top and tapered sides, they are geotropic, which means they will always grow away from gravity, regardless of how they are positioned.
Fill the holes or trenches with half of the excavated soil and tamp down with your hand to remove air pockets.
Water the soil, but do not soak it. The goal is to finish the process of removing air pockets.
Fill the holes or trenches with the remainder of the excavated soil and tamp down with your hand. Do not water the tulip bulbs again.