
Photo: Gretaz, CC BY-SA 4.0 · source
Herbaceous plant · Lily family (Liliaceae)
Garden tulip
Tulipa gesneriana
In other languages: Tuintulp (Nederlands) · Tulipe des jardins (Français)
Comes from outside Europe, but is often planted here in gardens and parks.
The garden tulip is the familiar spring bulb of our gardens and parks: a group cultivated for centuries that goes back to wild tulips from the mountains of Central Asia and Turkey. There, tulips grow on dry, stony slopes with hot summers and cold winters. In Belgium the garden tulip does not grow in the wild, but it has been planted here since the 16th century, and the Low Countries became the centre of tulip growing. You recognise it by its broad, grey-green leaves and a single large, cup-shaped flower per stem, in almost every colour except true blue. It flowers in April and May and gives early bees and bumblebees some pollen, although its greatest value is the colour after winter.
Caution: Tulip bulbs are poisonous if eaten, especially for dogs and cats that dig them up, and also for children; never mistake them for onions. The sap of bulbs and stems can irritate the skin with repeated contact: wear gloves if you plant a lot of bulbs or cut many flowers.
Light
Full sun
warm and bright
Moisture
Dry to normal
no wet feet
Hardiness
Fully hardy
down to -25 °C
Size
0.5 m
tall, 0.15 m wide
Flowering
April–May
| Pruning months | May–June |
|---|---|
| Height | 0.5 m |
| Native to Belgium | No, planted |
| Flowering | April–May |
Identify
How to recognise it
- Habit
- Bulb with a single unbranched stem of 30–60 cm, with 2–4 leaves at the base.
- Leaf
- Broadly lance-shaped, grey-green and somewhat waxy, often with a wavy edge.
- Flower
- Usually a single cup- or goblet-shaped flower per stem, with six tepals, six stamens and a three-lobed stigma. There are single, double, lily-flowered, fringed and parrot tulips, in almost every colour except true blue.
- Fruit/Seed
- An upright, three-sided capsule with flat brown seeds, if you do not cut off the flower.
- Bulb
- A pear-shaped bulb with a brown, papery skin; after flowering it forms a new bulb and offsets.
- Look-alikes
- The wild tulip (Tulipa sylvestris), naturalised in old parks, is smaller, with yellow, scented flowers that nod in bud.
Flowering: April–May · Pruning: May–June
In your garden
Why grow it?
- Colour in April and May, in an endless choice of shapes and colours.
- Single tulips give pollen to early bees and bumblebees; double flowers far less.
- Easy: plant in autumn and enjoy in spring, also in pots and containers.
- A superb cut flower that keeps growing in the vase.
- A piece of European history, from the Ottoman gardens to tulip mania in the Dutch Republic.
Garden tulip: where does it grow best?
- In the wild its ancestors grow on dry, stony slopes and steppes in Central Asia and Turkey, with hot, dry summers.
- Full sun, at least half the day; under trees that leaf out early it flowers less.
- Well-drained soil: sand or loam, or clay improved with coarse sand. In wet soil the bulbs rot.
- Ideal in borders among perennials, in pots and containers, or as a cut flower in the vegetable garden.
- Plant them in groups of at least 10–15 bulbs for the best effect.
Goes well with
- Forget-me-not: A blue haze among the tulips, and it self-seeds.
- Wallflower: Scented flowers in yellow, orange and purple, in the same weeks.
- Grape hyacinth: Low blue spikes at the base.
- Daffodil: Flowers a little earlier and, together with tulips, gives a long spring display.
- Hardy geranium: Grows up once the tulips have finished and hides the dying leaves.
Maintenance
Garden tulip: when and how to plant it?
- Buy healthy, firm bulbs from a garden centre or nursery; never take plants or bulbs from the wild. Wild tulips are often protected in their native range.
- Plant in October–November, or into December if the ground is not frozen: in cold soil there is less risk of tulip fire.
- Plant 10–15 cm deep, about three times the height of the bulb, pointed end up.
- Space the bulbs 10–15 cm apart, in natural groups rather than rows.
- Firm the soil and water if the autumn is dry.
- In pots you can plant different bulbs in layers: tulips at the bottom, smaller bulbs above.
Care
- Water
- Usually not needed. Only water in a dry spring and in pots.
- Feeding
- Want to keep them for years? Give some compost after flowering. For a single season no feeding is needed.
- Spent flowers
- Cut off the flower after flowering, but leave the stem and leaves until they turn yellow, about six weeks.
- Lifting
- Want to keep them? Lift the bulbs in June–July once the leaves are yellow, let them dry in a dry, airy place and replant in autumn.
- Coming back each year
- Many varieties flower less after the first year. Darwin hybrids and species tulips return best; otherwise add new bulbs every autumn.
Tip: Only plant tulips once the soil has really cooled, in November: this reduces the risk of tulip fire, and the bulbs still root well before winter.
Pruning and mowing
Pruning months: May–June.
When: Faded flowers in May; the leaves only in June, once they are yellow.
How:
- Cut off the faded flower just below the bloom, so no seed is formed.
- Leave the stem and leaves: they feed the bulb for next year.
- Only cut or pull away the leaves when they are completely yellow, usually in June.
- Hide the dying leaves behind later-emerging perennials.
Caution: Put plants with tulip fire in the household waste, not on the compost heap.
Propagation
- Offsets
- In June–July, lift the bulbs and remove the small bulbs. Plant them in a row in the vegetable garden in autumn; after 1–3 years they are big enough to flower.
- Seed
- Possible but slow: seedlings only flower after 4–7 years and do not resemble the parent. Mainly something for enthusiasts.
Garden tulip: how does it get through the winter?
Hardy to −25 °C.
- The bulb roots in autumn and overwinters in the ground; the leaves appear in February–March.
- Tulips need a cold winter: without a few weeks of cold the flower stem does not stretch properly.
- Hardy in open ground; protect pots from hard frost and too much rain.
- For wildlife the tulip has little value in winter, but voles are fond of the bulbs.
Diseases and pests
- Tulip fire: A fungal disease: distorted, spotted leaves and flowers with grey mould. Remove diseased plants, plant only in November and do not put tulips in the same spot for three years.
- Mice and voles: They eat the bulbs in winter. Plant in a wire basket.
- Fewer flowers after the first year: The bulb splits into smaller bulbs. Choose robust varieties, let the leaves die back fully, or replant each year.
- Slugs: They graze leaves and buds in a wet spring. Pick them off in the evening.
- Virus: Streaks in leaves and flowers that do not belong to the variety. Remove such plants; aphids spread the virus.
Through the year
- February: The first leaf tips appear.
- March: The leaves grow. Watch for slugs and tulip fire.
- April: Flowering. Cut flowers for the vase.
- May: Last flowers. Cut off faded flowers, leave the leaves.
- June: Cut off yellow leaves. Lift bulbs if you want to keep them.
- July: Store lifted bulbs in a dry, airy place.
- September: Buy new bulbs.
- October: Plant bulbs.
- November: Plant bulbs, also in pots.
You and this species
Did you know?
- The Swiss scholar Conrad Gessner saw a tulip flowering in a garden in Augsburg in 1559 and described it; the name Tulipa gesneriana honours him.
- The Flemish diplomat Ogier Ghislain de Busbecq saw tulips in the Ottoman Empire in the 16th century, and the botanist Carolus Clusius, born in Arras, grew them in Leiden from 1593.
- In 1636–1637 tulip mania broke out in the Dutch Republic, when huge sums were paid for rare striped bulbs. Only in the 20th century was it discovered that the stripes were caused by a virus.