Garden Tulip

Year-round

Tulipa gesneriana, the garden tulip, is not native to the Kansas City area. It originates in western and central Asia and is grown here strictly as an ornamental fall planted bulb.

• Give it well drained soil. Set each bulb about 2 to 3 times as deep as the bulb is tall, and mix bone meal into the hole to help roots form.
• Kansas City's warm spring weather does not give the bulb enough time to store up food for the next year, so MU Extension recommends treating it as a one season planting here and putting in fresh bulbs each fall rather than counting on it to come back.
• The bulb itself is the most toxic part of the plant to dogs and cats, so keep pets from digging up newly planted or stored bulbs.

A tidy row of tulips along a front walk or foundation bed is a common, low key way to add early spring color that reads as intentional to an HOA.

Fall

Fall is planting season for garden tulips in the Kansas City area.

• Plant bulbs in October, spacing them 4 to 8 inches apart and setting them about 2 to 3 times as deep as the bulb is wide.
• Pick firm bulbs without gray soft spots, work bone meal and compost into the bed, and water during a dry fall, but do not let the bed stay soggy.
• Once bulbs are in the ground, add up to 2 inches of mulch, either early in fall while it is still warm or after the first hard frosts once the ground is cold. Tulips can push through a mulch layer that shallow, but a thicker layer can trap heat and get in the way of dormancy.
• The cold that follows planting is doing real work. Bulbs need roughly 10 to 14 weeks of cool soil to form next spring's flower inside the bulb.

Winter

Winter is dormant underground time for planted tulip bulbs in the Kansas City area. There is not much active care to do, mostly protection.

• A mulch layer up to about 2 inches, put down in fall, keeps soil temperature steadier through winter's freeze and thaw cycles and helps stop bulbs from heaving up out of the ground.
• Leave that mulch in place through winter. A dormant bulb bed under mulch does not need regular watering.
• Kansas City winters can still swing between hard freezes and warm spells. If freeze and thaw cycles push a bulb up near the surface, press it back down and re-cover it with mulch.

Spring

Spring is bloom time, and what you do right after flowering decides whether the bulb has any strength left for next year.

• Cut off the spent flower head once petals drop, but leave the stem and all the leaves standing. Removing the flower stops it from wasting energy making seed.
• Do not cut, mow, or tie up the leaves right after bloom. The plant needs those leaves to photosynthesize and rebuild the bulb, and tying leaves up cuts down the light they get.
• While the foliage is still green, apply a light band of an organic bulb fertilizer, or a low nitrogen, higher phosphorus blend like 5-10-5, around the base without letting it touch the leaves.
• Keep the bed watered while the foliage is still green and active. Once the leaves yellow and die back on their own, usually by late June as Kansas City's heat arrives, they can be cut down and removed.

Summer

By summer the show is over. Kansas City's early heat is exactly why garden tulips struggle to come back here.

• MU Extension notes that Missouri's climate warms too early in the season for tulips to store enough food to naturalize, and recommends treating them as an annual here rather than counting on a repeat bloom.
• Once foliage has fully yellowed and died back, most gardeners in the area simply clear out the spent bulbs and beds so summer plants can take that space, then plant new tulip bulbs again in fall.
• If you want to try saving bulbs anyway, wait until the foliage has completely died back before digging, then cure and store them in a cool, dark, dry spot, knowing bloom quality next year is likely to be weaker.