Bleeding Heart in Zone 3a & 3b
Lamprocapnos spectabilis
Yes, bleeding heart grows in zones 3a and 3b and comes back each year. Plant it outside May 2–May 9.
When to plant bleeding heart in zone 3b
Zones 3a and 3b 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.
| Start indoors | Not typically started indoors |
|---|---|
| Direct sow / transplant outside | May 2–May 9 |
| Estimated bloom | First real harvest the season after planting |
Spacing: about 2 square feet per plant (square-foot-gardening spacing). Mature height: 2-3 ft.
Before you plant: Bleeding heart has a winter-hardiness note for zone 3b. See the details below.
Plant alongside it in zone 3b
These go outside within two weeks of bleeding heart in zone 3b, so one planting day can cover them.
- LarkspurMay 2–May 9
- Penstemon (Beardtongue)May 2–May 9
- Black-Eyed SusanMay 9–May 16
- Clarkia (Farewell-to-Spring)May 9–May 16
- Cynoglossum (Chinese Forget-Me-Not)May 9–May 16
- Phacelia (Lacy Phacelia)May 9–May 16
Bleeding heart is a spring perennial with arching stems of pendant pink and white flowers, and it disappears entirely partway through the year.
How bleeding heart fits zone 3's season
Zone 3b's frost-free window runs about 98 days, from May 30 to September 5. Bleeding heart takes about 1 growing season to reach full flowering, so what matters here is how many of these seasons it gets, not whether one is long enough.
Bleeding heart is hardy in zones 3-9, so in zone 3b it stays in the ground through winter and comes back rather than being replanted. Allow about 2 ft of spread at maturity.
Bleeding Heart planting windows in every zone
Zone 3b is highlighted. Useful for comparing against a neighbouring zone, or for a garden somewhere else.
| Zone | Start indoors | Sow or plant out | Bloom |
|---|---|---|---|
| 3a & 3b (your zone) | Not usually | May 2–May 9 | First real harvest the season after planting |
| 4a & 4b | Not usually | Apr 17–Apr 24 | First real harvest the season after planting |
| 5a & 5b | Not usually | Apr 12–Apr 19 | First real harvest the season after planting |
| 6a & 6b | Not usually | Mar 28–Apr 4 | First real harvest the season after planting |
| 7a & 7b | Not usually | Mar 13–Mar 20 | First real harvest the season after planting |
| 8a & 8b | Not usually | Feb 25–Mar 4 | First real harvest the season after planting |
| 9a & 9b | Not usually | Jan 18–Jan 25 | First real harvest the season after planting |
Good companions
No well-established companions for bleeding heart.
Where to buy bleeding heart seeds
None of the seed suppliers we list carries bleeding heart seeds right now. A local garden center or a specialty seed house is the place to look.
See why we recommend these suppliers →
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See it growing
Search YouTube for "growing bleeding heart" videos → (a live search, not a hand-picked video; results vary and aren't vetted by us)
← Back to the full zone 3b calendar · Plan your beds in the Garden Designer →
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Growing Bleeding Heart in USDA zone 3b: when to start seeds indoors, when to direct-sow, and when to expect a bloom.
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