Plant Golden Apeldoorn bulbs in fall, once soil temperatures cool, for a big display the following spring. These bulbs need a cold winter period to bloom well.
Planting
- Unpack right away. Open the bag when your bulbs arrive and store them in a cool, dry, dark place until planting.
- Pick a bright spot. Choose a site with full sun to part shade and well-drained soil; avoid low areas where water collects.
- Dig 6-8 inches deep. Set bulbs pointed end up, spaced 3-6 inches apart, and plant in clusters of 10 or more for the best visual impact.
- Backfill and water in. Cover with soil, firm gently, and water once to settle the bulbs.
- Mulch lightly. Add 1-2 inches of mulch to moderate soil temperature over winter.
Watering
- Keep it moderate. Water at planting, then let winter moisture do the work; tulips rot in soggy soil.
- Spring support. During active growth and bloom, water if rainfall is scarce, aiming for evenly moist but never wet soil.
- Stop after bloom. Reduce watering once foliage yellows so bulbs can go dormant dry.
Feeding
- Feed at planting. Mix a bulb fertilizer or bone meal into the planting hole.
- Repeat in spring. Apply a balanced granular fertilizer as shoots emerge to fuel next year's flowers.
After Bloom Care
- Deadhead only. Remove spent flowers but leave the stems in place.
- Let foliage mature. Allow leaves to fully yellow and die down naturally — that's how the bulb recharges for the next season.
- Divide if crowded. After several years, lift and separate clumps in summer once foliage has withered.
Containers
- Use deep pots. Choose containers at least 12 inches deep with drainage holes and quality potting mix.
- Protect in winter. In zones 3-5, move pots to an unheated garage or shelter to prevent freeze-thaw damage.