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Waterlily tulip

Tulipa kaufmanniana · Liliaceae

Waterlily tulip (Tulipa kaufmanniana) in flower
Photo: Retired electrician, via Wikimedia Commons (CC0)

The earliest tulips: long buds, often red outside, that open flat in the sun into creamy or yellow stars like waterlilies.

Size
8 in tall, 6 in wide
Zones
3 to 7
Light
Full sun
Flowers
Late March to mid April
Pets
Toxic (moderate)
Job in a bed
Bulb layer

A bed built around waterlily tulip

The planner designed this bed around waterlily tulip when this page was made: a 12 × 6 ft (3.7 × 1.8 m) English border in zone 6, full sun. It chose the other plants from the 966 that suit those conditions, and says below why waterlily tulip stands where it does.

A 12 × 6 ft (3.7 × 1.8 m) bed at eye level in mid April: Bloody cranesbill 'Max Frei', Leadwort, False sunflower 'Summer Sun', Tatarian aster 'Jindai', Arborvitae 'Mr. Bowling Ball', Bergenia 'Bressingham White', Waterlily tulip, Star of Persia.
A 12 × 6 ft (3.7 × 1.8 m) English border in zone 6, full sun, seen from the path in mid April.
4. Tatarian aster 'Jindai'44. Tatarian aster 'Jindai'44. Tatarian aster 'Jindai'43. False sunflower 'Summer Sun'33. False sunflower 'Summer Sun'33. False sunflower 'Summer Sun'35. Arborvitae 'Mr. Bowling Ball'51. Bloody cranesbill 'Max Frei'11. Bloody cranesbill 'Max Frei'11. Bloody cranesbill 'Max Frei'11. Bloody cranesbill 'Max Frei'11. Bloody cranesbill 'Max Frei'12. Leadwort22. Leadwort22. Leadwort22. Leadwort22. Leadwort21. Bloody cranesbill 'Max Frei'11. Bloody cranesbill 'Max Frei'11. Bloody cranesbill 'Max Frei'18. Star of Persia88. Star of Persia86. Bergenia 'Bressingham White'66. Bergenia 'Bressingham White'66. Bergenia 'Bressingham White'62. Leadwort22. Leadwort22. Leadwort28. Star of Persia88. Star of Persia87. Waterlily tulip7. Waterlily tulip7. Waterlily tulip7. Waterlily tulip7. Waterlily tulip7. Waterlily tulip7. Waterlily tulip7. Waterlily tulip
From above, to scale. Each circle is one plant, as wide as the room it needs.

The plants

  1. 1 Bloody cranesbill 'Max Frei' × 8, pink
  2. 2 Leadwort × 8, blue
  3. 3 False sunflower 'Summer Sun' × 3, yellow
  4. 4 Tatarian aster 'Jindai' × 3, purple
  5. 5 Arborvitae 'Mr. Bowling Ball' × 1, grey-green leaves
  6. 6 Bergenia 'Bressingham White' × 3, white
  7. 8 Star of Persia × 4, purple

Why this plant

  • The only red.

Why here

  • Near the front. At 8 in it stands ahead of bergenia 'Bressingham White' (14 in) without hiding it.
  • 8 plants in 2 handfuls. In the gaps between other plants, which fill the space when the bulb is not in growth.

Why now

  • In flower for four weeks. From late March to mid April.
  • Opens the season. For its first two weeks nothing else on the plan is in flower.
  • Leaves gone by midsummer. They die back and leave bare ground. A perennial that comes up late stands beside it, and grows over the gap.

Planned as an English border: 6 of the 6 groups (100%) are drifts, longer along the bed than they are deep. Cool colours (pink, blue and purple) with yellow and red as the warm notes, and white to calm things between them. The front edge is finished with bloody cranesbill 'Max Frei' and leadwort.

The planner's own design check: 12 Excellent, 5 Good. It flags one thing to watch: Nothing on this plan is highly poisonous or an aggressive spreader.

Open this bed in the planner Change its size, the sun or the style, move plants about, or swap one for another.

Where waterlily tulip goes in a border

At 8 in it belongs at the front of a bed. In the planner's ten height classes it is low (6 to 12 in).

Its job: bulb layer. Small bulbs planted in handfuls of five or seven in the gaps between other plants, for colour before the perennials wake up.

They flower with the early daffodils, weeks ahead of the main tulip season. Plant them where the low spring sun will open the flowers.

  • Very early tulips
  • Rock gardens
  • The front of a bed

What to plant with waterlily tulip

Plants recorded as good partners for it, and what each pairing does:

Questions about waterlily tulip

Does waterlily tulip need sun or shade?

Waterlily tulip grows in full sun (6 or more hours of direct sun a day).

It wants ordinary well-drained soil, of average fertility, and a good soak in dry spells.

What zones does waterlily tulip grow in?

USDA zones 3 to 7. It is hardy to zone 3, which means it survives winter nights down to about −30 °F (−34 °C).

Above zone 7 it struggles: the zones measure winter cold, but a plant's top zone usually means the summers are too hot or the winters too mild for it to rest.

Gardening in Canada? Use the USDA zone for your town: Canada's own zone map uses different numbers.

When does waterlily tulip flower in my zone?

In zone 5 it flowers late March to mid April. As a spring flower it moves about a week for every zone: earlier where it is warmer, later where it is colder.

Roughly when waterlily tulip is in flower
Zone 3Mid April to early May
Zone 4Early April to late April
Zone 5Late March to mid April
Zone 6Late March to mid April
Zone 7Mid March to early April

Worked out from Hopkins' bioclimatic law: spring arrives about four days later for each degree of latitude north, and one zone is roughly two degrees. A warm spring or a cold one moves any garden two weeks either way.

How far apart should waterlily tulip be planted?

5 in (12 cm) apart, from the middle of one plant to the middle of the next. That is a little closer than its full width of 6 in (15 cm), so a group knits into one patch.

It grows 8 in (20 cm) tall. Give it the full distance from anything taller, or it will lean out towards the light.

How many waterlily tulip plants do I need?

At 5 in apart, set out in staggered rows:

  • 74 to fill 10 square feet (about 1 m²)
  • 26 for a single row 10 ft (3 m) long
  • 238 to fill a 4 × 8 ft bed on its own

In a mixed border, plant it as handfuls of five or seven, in the gaps between other plants.

In the bed above, the planner used eight in two groups.

Is waterlily tulip poisonous to dogs and cats?

Yes: moderate toxicity to dogs, cats and horses. The bulbs are the most poisonous part and cause vomiting, drooling and diarrhoea in pets. Handling the bulbs can irritate skin.

Rated from NC State Extension and the ASPCA. Where references disagree, the more cautious rating is used.

Do deer eat waterlily tulip?

They may. NC State does not list it as resistant to deer or rabbits. Where they visit, protect it, or plant it among ones they avoid.

What can I plant to hide waterlily tulip's leaves after it flowers?

A bulb's leaves have to be left to yellow for about six weeks after flowering, to feed next year's flowers. Plant it among perennials that come up late and spread wide, and they grow over the leaves as they fade:

What does waterlily tulip look like in winter?

Waterlily tulip is underground: it dies back after flowering and waits as a bulb until spring. Mark where it is, so a fork does not find it first.

More Tulipa

In these guides

Zone guides: Zone 3 · Zone 4 · Zone 5 · Zone 6 · Zone 7

In flower in: March · April

Every fact on record

Type
Bulb
Size
8 in (20 cm) tall, 6 in (15 cm) wide
Plant
5 in (12 cm) apart
Height class
Low (6 to 12 in)
Place in the bed
Front
Flowers
Late March to mid April; open bowls; white, yellow, red, pink
Leaves
Medium texture, summer-dormant; grey-green
Shape
Upright, clumping
Hardy in
USDA zones 3 to 7
Light
Full sun
Soil
Average, well-drained
Water
Moderate
Feeding
Light, in spring
Family
Liliaceae
Comes from
Turkistan

Checked against NC State Extension and ASPCA poison lists. Flowering times are for zone 5: later in colder zones, earlier in warmer ones. Toxicity and spread information is a general gardening guide, not veterinary or medical advice, and invasive status varies by region. If a person or pet eats a plant, contact poison control or a vet. Check your local invasive species list before planting anything with a spread warning.