When to Plant Tulip Bulbs: Fall Timing by Region, Depth and the South

Tulips (Tulipa) are hardy bulbs that need a cold period before they flower, which is why they go in the ground in fall for spring bloom (University of Minnesota). The goal is roots in place before the soil freezes, and the top growth staying underground until spring. Tulips grow best where winters are cool and moist and summers are warm and dry (NC State Extension), and that shapes how long they last as much as when you plant.

When to plant tulips by region

Extension services give the timing as either a soil temperature or a month. Here is what each says for its own state:

If your state isn't listed, the soil-temperature rule travels best. A simple soil thermometer at planting depth tells you more than the calendar (GardenPal suggestion). Rutgers and Nebraska Extension both say the point of waiting for soil below 60°F is to give roots enough time to grow before the ground freezes.

Tulips in the South and Florida

Tulips need a long cold rest, and warm winters don't give it. Clemson says most bulbs need a 12- to 16-week chilling period to flower, and that bulbs that don't get enough chill bloom close to the ground on very short stems. Its advice for central and coastal South Carolina is to keep tulip bulbs in the refrigerator from the time you buy them until you plant them, from November to late December, and to treat them as annuals that are dug and discarded after spring bloom. Keep fruit out of that refrigerator drawer: Clemson says the ethylene gas fruit gives off can stop bulbs from blooming.

UF/IFAS says Florida winters are too warm for tulips' dormancy, but you can grow them as annuals from bulbs pre-chilled for two to four months and planted in winter. They bloom once and usually not again. Clemson says some bulb suppliers sell bulbs that have already been chilled.

How deep and far apart to plant tulips

Why tulips often fade after a year or two

Gardeners expect tulips to come back like daffodils, and many don't. NC State says tulip performance usually drops off sharply from the second year, and that the plant loses vigor when soil temperatures reach 70°F. Wisconsin Horticulture says hybrid tulips in particular often aren't adapted to wet, heavy clay and may return for only a few years. Nebraska Extension says tulips can be short-lived or never flower in Nebraska because of high soil temperatures.

• Grow species tulips. Wisconsin Horticulture and NC State both say species tulips, the shorter types with smaller flowers, make better perennials. Wisconsin names Tulipa clusiana, T. tarda, T. greigii and T. kaufmanniana.
• Or treat hybrids as annuals. Wisconsin Horticulture suggests adjusting expectations, and Clemson and UF/IFAS treat tulips as one-season flowers in warm climates.
• Let the leaves ripen. Leave foliage until it yellows (Rutgers, NC State), and don't braid or tie it, which Nebraska Extension says can reduce future flowers.
• Keep summer water off. Wisconsin Horticulture says bulbs like moisture while blooming but hot, dry conditions when dormant, so avoid planting thirsty annuals right on top of them.

Squirrels, voles and deer

Tulips are a favorite of bulb-eating animals. The University of Minnesota says squirrels and chipmunks may dig up and eat newly planted bulbs, especially tulips. NC State adds that mice and voles eat the bulbs and deer eat the flowers. Two physical fixes come up in extension advice:

• Chicken wire: lay it flat over the planted area and pin or weight it down; the University of Minnesota says to cover it with mulch, and the shoots grow through. Wisconsin Horticulture says to remove it promptly in spring.
• Chicken grit: Wisconsin Horticulture suggests an inch or so of chicken grit a little under the soil surface over the bulbs, because squirrels and chipmunks don't like digging through it.

Or plant daffodils nearby: see when to plant daffodils. NC State also notes that tulips can cause contact dermatitis in some people, so wear gloves if your skin reacts.

Tulips in and around the vegetable garden

Bulbs fit beds that sit empty in early spring. Rutgers suggests interplanting spring bulbs with cold-tolerant annuals such as pansies to hide the ripening leaves; see when to plant pansies. Fall planting time for tulips overlaps with garlic in many areas, so it is easy to do both jobs on the same weekend (GardenPal suggestion); see when to plant garlic and what to plant in fall.

Frequently asked questions

When should I plant tulip bulbs?

In fall, once soil is below about 60°F (Rutgers, Nebraska Extension) or around 50 to 55°F (Wisconsin Horticulture). That is usually late September through October in northern states.

Is it too late to plant tulips in November or December?

Often not. Iowa State says tulips can be planted as late as late November or early December if the ground isn't frozen, and the University of Minnesota says to plant them as late as you can get them into the soil.

How deep do you plant tulip bulbs?

About 6 to 8 inches deep (Nebraska Extension, Clemson, Rutgers), or 2 to 3 times the height of the bulb, measured from the bottom of the bulb (Wisconsin Horticulture).

Can you plant tulips in spring?

The sources here are about fall planting. Tulips need a cold period to flower (University of Minnesota), so unchilled bulbs planted in spring are unlikely to bloom well (GardenPal note).

Why didn't my tulips come back?

NC State says tulip performance usually declines sharply from the second year, and Wisconsin Horticulture says hybrid tulips often aren't suited to wet, heavy clay. Species tulips are better perennials.

Can I grow tulips in Florida or the Deep South?

Yes, as annuals. Use bulbs chilled for 2 to 4 months and plant in winter (UF/IFAS), or refrigerate bulbs until planting in November to late December in South Carolina (Clemson).