Repotting guide

When & how to repot Tulipa 'Queen of Night' (Tulipa 'Queen of Night')

Also called Queen of Night tulip, black tulip, dark maroon tulip.

More about tulipa 'queen of night'

About Tulipa 'Queen of Night'

Tulipa 'Queen of Night' · also called Queen of Night tulip, black tulip · flowering

'Queen of Night' is a Single Late tulip celebrated as the classic 'black tulip', its deep velvety maroon-purple cups so dark they appear near-black. A spring-flowering bulb, it blooms mid-to-late season on tall stems. Plant bulbs in autumn in full sun and free-draining soil; it naturalises poorly, so treat as short-lived and replant for reliable display.

Mature size: About 50-60 cm tall and 10-15 cm wide, with goblet-shaped blooms 6-8 cm across.

Watch for — Tulip fire (Botrytis tulipae): A fungal blight causing scorched, distorted leaves and spotted petals. Remove and destroy infected plants, avoid replanting tulips in the same spot for several years.

How to tell tulipa 'queen of night' needs repotting

Repotting on a calendar is less reliable than reading the plant. For tulipa 'queen of night', watch for these signs:

Roots circling the bottom of the module or pot, or poking out of the drainage holes.
The seedling dries out within a day and growth has visibly stalled.
Roots are white and matted in a tight spiral when you tip the plant out.
It has outgrown its current container for the stage of the season — pot tulipa 'queen of night' on before it becomes hard root-bound.

For the underlying biology of a pot-bound root system and why it stalls a plant, see our guide to spotting and fixing a root-bound plant.

How often to repot tulipa 'queen of night'

Pot on seedlings as they grow; not a perennial repot. Tulipa 'Queen of Night'is grown for one season, so the question is really “how often to pot on” — keep moving it up before the roots circle. Spring-flowering bulbous perennial forming an upright clump of strap-shaped grey-green leaves topped by a single tall flower stem; often treated as an annual as it weakens after the first year..

What size pot to step tulipa 'queen of night' up to

Pot tulipa 'queen of night' on gradually — a seedling jumped straight into a huge pot sits in cold, wet, airless soil and stalls. Step up one or two sizes at a time as the roots fill each container, finishing in a large final pot or the ground. The aim is roots that never circle and never check.

Not sure of the exact diameter? Our pot size calculator takes the current pot and root spread and tells you the right next size — it deliberately recommends a single step up, never a big jump.

The best time of year to repot tulipa 'queen of night'

Pot tulipa 'queen of night' on through the active growing season, whenever roots fill the current container — there is no single date, just "before it becomes root-bound". Avoid potting on during a cold snap.

Step-by-step: repotting tulipa 'queen of night'

Pot on before it is root-bound. Check tulipa 'queen of night' regularly; move it up as soon as roots reach the edge of the cell or pot, not after they have circled.
Step up one or two sizes. Choose the next container up — not a giant one. Cold, wet, unused soil around a small root system stalls seedlings.
Knock it out gently. Support the stem, tip the pot, and ease the rootball out without breaking it. A little teasing of circled roots at the base is fine.
Pot into rich mix. Set it into fresh free-draining, fertile soil at the same depth (tomatoes are the exception — they can go deeper to root along the stem).
Water in and grow on. Water well, keep it in good light, and resume feeding once it is established and growing again.

Aftercare

Water tulipa 'queen of night' in well and keep it in bright light; a freshly potted-on seedling can wilt for a day while roots settle, so do not overcompensate by drowning it. Do not fertilise for about 1 week — fresh mix already carries nutrients and feeding freshly disturbed roots scorches them.

The right soil mix for tulipa 'queen of night'

Tulipa 'Queen of Night' wants free-draining, fertile soil. Light, well-drained soil, neutral to slightly alkaline, pH 6.0-7.5. Heavy, wet clay rots bulbs; add grit and compost to improve drainage. Plant bulbs 15 cm deep in autumn. Always use fresh mix when you repot — reusing old, broken-down soil reintroduces the compaction and poor drainage you are repotting to fix.

Repotting tulipa 'queen of night' — frequently asked questions

How often should you repot tulipa 'queen of night'?

Pot on seedlings as they grow; not a perennial repot for tulipa 'queen of night'. Tulipa 'Queen of Night' is a seasonal crop, so you pot it on as a growing plant rather than repotting a perennial. Step seedlings up gradually into free-draining, fertile soil so the roots never circle the cell, ending in a large final container. A root-bound transplant stalls and never fully recovers.

What size pot does tulipa 'queen of night' need?

When is the best time of year to repot tulipa 'queen of night'?

Can you put tulipa 'queen of night' straight into a much bigger pot?

No. Even a fast-growing tulipa 'queen of night' should only go up one pot size at a time. A vastly oversized pot holds a reservoir of wet soil the roots cannot reach, which stays cold and soggy and rots the roots — the opposite of what you wanted.

Should you fertilise tulipa 'queen of night' after repotting?

Not immediately. Wait about 1 week after repotting tulipa 'queen of night'. Fresh mix already contains nutrients, and feeding freshly cut or disturbed roots burns them. Resume your normal feeding routine once you see new growth.