Tulip in Zone 4a & 4b
Tulipa spp.
Yes, tulip grows in zones 4a and 4b. Plant it outside in Sep–Oct. For a fall crop, plant out in Sep–Oct.
When to plant tulip in zone 4b
Zones 4a and 4b share the same average frost dates, so this page covers both.
Method: Direct sow: Direct-sow outside. It doesn't transplant well, or doesn't need the extra time indoors.
| Window | Fall window |
|---|---|
| Start indoors | Not typically started indoors |
| Direct sow / transplant outside | Sep–Oct |
| Estimated bloom | ~180 days after direct-sowing |
Spacing: 7 per square foot (square-foot-gardening spacing). Mature height: 1-1.5 ft.
Zone 4b dates sourced from www.longfield-gardens.com.
Fall window: the last sowing date is the average first frost minus days to maturity, the method in Purdue Extension's fall garden guide, which lists tulip for late-summer planting.
Plant alongside it in zone 4b
These go outside within two weeks of tulip in zone 4b, so one planting day can cover them.
- CrocusSep–Nov
- Daffodil (Narcissus)Sep–Nov
- HyacinthSep–Nov
- Ornamental AlliumSep–Nov
Tulips are planted in fall and bloom the following spring, which means the payoff for this year's work doesn't show up until next year: one upright, cup-shaped bloom per 12- to 24-inch stem, in almost any color except true blue. Even then, most hybrid tulips put on their best show once and fade in vigor after that. Treating them as a bulb you might replant rather than a permanent perennial saves a lot of disappointment.
How tulip fits zone 4's season
Zone 4b's frost-free window runs about 128 days, from May 15 to September 20. Tulip goes in during the fall and grows through the winter, so it isn't limited by this window: expect first bloom about 180 days after planting.
Tulip planting windows in every zone
Zone 4b is highlighted. Useful for comparing against a neighbouring zone, or for a garden somewhere else.
| Zone | Start indoors | Sow or plant out | Bloom |
|---|---|---|---|
| 3a & 3bFall window | Not usually | Sep–Oct | ~180 days after direct-sowing |
| 4a & 4bFall window (your zone) | Not usually | Sep–Oct | ~180 days after direct-sowing |
| 5a & 5bFall window | Not usually | Oct | ~180 days after direct-sowing |
| 6a & 6bFall window | Not usually | Oct–Nov | ~180 days after direct-sowing |
| 7a & 7bFall window | Not usually | Oct–Nov | ~180 days after direct-sowing |
| 8a & 8bFall window | Aug | Nov | ~180 days after transplanting |
Bloom dates are about 180 days after the sow or plant-out date.
Good companions
No well-established companions for tulip.
Where to buy tulip bulbs
We haven't vetted bulb/tuber suppliers yet. Our seed-supplier list below doesn't carry these. The growing-guide source cited above is a good starting point for where to buy.
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See it growing
Search YouTube for "growing tulip" videos → (a live search, not a hand-picked video; results vary and aren't vetted by us)
← Back to the full zone 4b calendar · Plan your beds in the Garden Designer →
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Growing Tulip in USDA zone 4b: when to start seeds indoors, when to direct-sow, and when to expect a bloom.
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