Black Hero tulip bulbs are planted in fall for blooms the following spring. Unpack them as soon as they arrive and store them in a cool, dry, dark spot until you're ready to plant.
Planting
- Pick your timing. Plant in fall, roughly 4-6 weeks before your ground freezes, so bulbs get the cold period they need.
- Choose the site. Give them sun to part shade and soil that drains freely - bulbs sitting in soggy ground will rot.
- Dig to depth. Set bulbs 6-8 inches deep, pointed tip facing up, spacing them 3-6 inches apart.
- Plant in groups. Clusters of 7-10 bulbs create a much stronger color statement than single-file rows.
- Backfill and water. Firm the soil gently and water once at planting to settle everything in.
Watering
- Fall and spring. Keep soil lightly moist while roots and shoots are active; about an inch of water per week including rainfall is plenty.
- After bloom. Taper off watering as the foliage yellows - dormant bulbs prefer drier soil.
- Containers. Pots dry out faster, so check the top inch of mix and water when it feels dry.
Feeding
- At planting. Mix a balanced bulb fertilizer or bone meal into the planting hole.
- Early spring. Scratch a light application of balanced fertilizer into the soil surface as shoots emerge.
After Bloom Care
- Deadhead only. Remove spent flowers and leave the stems in place.
- Let foliage mature. Allow leaves to yellow and die back naturally - that's how the bulb recharges for next year.
- Tidy up later. Once foliage is fully brown, pull or cut it away.
Winter
- In the ground. Hardy in zones 3-8; a 2-3 inch mulch layer moderates soil temperature swings in colder zones.
- In containers. Move pots to an unheated garage or sheltered spot so the mix chills but doesn't freeze solid.