Fall bulb planting: when to plant tulips, daffodils and crocus by zone

Last updated November 4, 2026 · Sources: cited below

Tulips, daffodils, crocus and hyacinths are planted in fall so they can grow roots in cool soil, sit through a winter chill, and flower in spring. The planting window is set by soil temperature and by when the ground freezes — both of which follow your local frost calendar more closely than the calendar on the bulb bag. This guide pulls together what university extension services recommend and ties it to the NOAA frost and hard-freeze dates on this site.

The two rules extension services agree on

• Wait for cool soil. Rutgers Cooperative Extension says spring bulbs should go in when the soil temperature falls below 60°F, typically mid-September through October in New Jersey.¹ South Dakota State uses a related cue: nights staying in the 40–50°F range.³ Wisconsin's horticulture extension suggests waiting for ground temperatures around 50–55°F or lower.⁴
• Finish before the ground freezes. Illinois Extension puts the ideal time at about four to six weeks before the ground freezes, adding that any time before it freezes is better than storing bulbs over winter;² South Dakota State gives the same four-to-six-week target.³

Planting too early in warm soil can push top growth in fall; N.C. Cooperative Extension warns that early planting may encourage premature growth that frost then damages.⁵

Using your frost dates as the cue

Few gardeners own a soil thermometer, and nobody can look up “the date my ground freezes.” The frost dates on our city pages are a practical stand-in: by the median first fall frost (32°F), nights are cold and soil is cooling; the median first hard freeze (28°F) comes later, and in cold-winter zones the soil usually freezes some weeks after that. As a rule of thumb (our approximation, not an extension rule), plant hardy bulbs from around your first-frost date and aim to be finished in the weeks around your hard-freeze date. If you have a soil thermometer, the 60°F reading at planting depth beats any calendar.

Dates are NOAA 1991–2020 medians for the station assigned to each city. Find yours on the city list or with the ZIP zone finder; our guide to frost-date probabilities explains why a median is not a promise.

Timing by hardiness zone

• Zones 3–5: the window opens earliest. South Dakota State's planting time is mid-September through mid-October.³ Plant soon after the first frost; once the ground is frozen, the season is over.
• Zones 6–7: October into November is typical. Illinois Extension's window is around mid-October to early November,² and Rutgers gives mid-September through October for New Jersey.¹
• Zone 8: soil cools late. In eastern North Carolina, extension advice is to plant when soil reaches about 60°F, typically mid-October through early December. Daffodils are dependable; tulips need a pre-chill (8–10 weeks in a refrigerator, away from fruit) and planting in December, and are best treated as annuals.⁵
• Zones 9 and warmer: winters are not cold enough for tulips and hyacinths. LSU AgCenter recommends refrigerating them at least six to eight weeks and planting the pre-chilled bulbs in late December or early January, because soil may stay too warm until then and warm soil can cancel the chilling.⁶ 52 cities on this site are frost-free or nearly so, and show seasonal windows instead of frost dates.

Zone describes winter cold, not soil temperature, so two cities in the same zone can differ by weeks. Atlanta (zone 8a) has a median first frost of Nov 8, so the soil there is still warm well into fall — the reason tulip planting there waits until about December.

How to plant

• Depth: plant two to three times as deep as the bulb is wide or tall — about 6–8 inches for tulips and daffodils, 3–4 inches for crocus, measured from the bottom of the bulb, pointed end up.¹²
• Site: sun and good drainage. South Dakota State asks for at least six hours of direct sun; soggy soil rots bulbs.³ Early bloomers such as crocus and snowdrops can go under deciduous trees, which leaf out after they bloom.²
• Water once: water after planting to settle the soil and start rooting, but avoid overwatering, which can lead to bulb rot.¹
• Soil pH and phosphorus: Rutgers gives an optimum pH of 6 to 7 and suggests mixing any needed phosphorus below the bulbs; a soil test tells you whether you need it.¹
• Tulips may fade: Wisconsin notes that many hybrid tulips are poorly adapted to wet, heavy clay and may return for only a few years; species tulips often do better.⁴

Mulch after the ground freezes

In cold zones, a winter mulch over bulb beds goes on after the soil freezes, not at planting — the University of Minnesota explains that the aim is to keep the soil frozen and prevent heaving.⁷ Our winter garden care guide covers when and how much.

Worked example: Akron, Ohio (zone 6b)

• Before Oct 28 (median first frost): buy bulbs and store them cool and dry; prepare the bed.
• From about Oct 28 to Nov 7 (median first 28°F freeze): plant daffodils, tulips and crocus; water once.
• Later in fall, once the top of the soil stays frozen: mulch the bed.
• Spring: pull mulch back as shoots appear; see the Akron frost dates for the last-frost risk.

For vegetables you can still sow or plant in fall, see our fall planting guide.

More guides: How to read your hardiness zone · Frost dates explained · Why the 2023 hardiness zone map looks warmer · Microclimates · Succession and fall planting · Winter garden care