Xeranthemum (Immortelle) in Zone 7a & 7b
Xeranthemum annuum
Yes, xeranthemum (immortelle) grows in zones 7a and 7b. Start seeds indoors Feb 27–Mar 6 and plant out Apr 10–Apr 17.
When to plant xeranthemum (immortelle) in zone 7b
Zones 7a and 7b share the same average frost dates, so this page covers both.
Method: Either: Start indoors for an earlier harvest, or direct-sow outside for less fuss. Either works.
| Start indoors | Feb 27–Mar 6 |
|---|---|
| Direct sow / transplant outside | Apr 10–Apr 17 |
| Estimated bloom | Jul 4–Jul 11 (~85 days after planting) |
Spacing: 4 per square foot (square-foot-gardening spacing). Mature height: 1.5-2 ft.
Plant alongside it in zone 7b
These go outside within two weeks of xeranthemum (immortelle) in zone 7b, so one planting day can cover them.
- NasturtiumApr 17–Apr 24
- MarigoldApr 17–Apr 24
- African DaisyApr 10–Apr 17
- Amaranthus (Love-Lies-Bleeding)Apr 10–Apr 17
- Ammi (False Queen Anne's Lace)Apr 10–Apr 17
- Ammobium (Winged Everlasting)Apr 10–Apr 17
Xeranthemum, also called immortelle or paper flower, is a papery-petaled daisy relative that holds its color remarkably well once dried, which is the entire reason it's grown.
How xeranthemum (immortelle) fits zone 7's season
Zone 7b's frost-free window runs about 198 days, from April 10 to October 25. Xeranthemum (immortelle) needs about 85 days from sowing to first bloom.
Xeranthemum (Immortelle) planting windows in every zone
Zone 7b is highlighted. Useful for comparing against a neighbouring zone, or for a garden somewhere else.
| Zone | Start indoors | Sow or plant out | Bloom |
|---|---|---|---|
| 2a & 2b | Apr 8–Apr 15 | May 20–May 27 | Aug 13–Aug 20 |
| 3a & 3b | Apr 18–Apr 25 | May 30–Jun 6 | Aug 23–Aug 30 |
| 4a & 4b | Apr 3–Apr 10 | May 15–May 22 | Aug 8–Aug 15 |
| 5a & 5b | Mar 29–Apr 5 | May 10–May 17 | Aug 3–Aug 10 |
| 6a & 6b | Mar 14–Mar 21 | Apr 25–May 2 | Jul 19–Jul 26 |
| 7a & 7b (your zone) | Feb 27–Mar 6 | Apr 10–Apr 17 | Jul 4–Jul 11 |
| 8a & 8b | Feb 11–Feb 18 | Mar 25–Apr 1 | Jun 18–Jun 25 |
| 9a & 9b | Jan 4–Jan 11 | Feb 15–Feb 22 | May 11–May 18 |
| 10a & 10b | Dec 19–Dec 26 | Jan 30–Feb 6 | Apr 25–May 2 |
| 11a & 11b | Nov 20–Nov 27 | Jan 1–Jan 8 | Mar 27–Apr 3 |
Bloom dates are about 85 days after the sow or plant-out date, not after starting seeds indoors.
Zone 2 sows before zone 3 here, which looks wrong and is not. USDA zones rank winter cold, not season length, and zone 2 is mostly interior Alaska, where hard winters come with warm summers. More on what a zone measures.
Good companions
No well-established companions for xeranthemum (immortelle).
Where to buy xeranthemum seeds
None of the seed suppliers we list carries xeranthemum seeds right now. A local garden center or a specialty seed house is the place to look.
See why we recommend these suppliers →
As an Amazon Associate we earn from qualifying purchases. Some links on this page also go to other retailers we may earn a commission from as an affiliate, at no extra cost to you. We only recommend products with a clear consensus of positive, independent reviews, or ones we bought and use ourselves. Each item on our gear page says which.
See it growing
Search YouTube for "growing xeranthemum (immortelle)" videos → (a live search, not a hand-picked video; results vary and aren't vetted by us)
← Back to the full zone 7b calendar · Plan your beds in the Garden Designer →
%20in%20USDA%20zone%207b%3A%20when%20to%20start%20seeds%20indoors%2C%20when%20to%20direct-sow%2C%20and%20when%20to%20expect%20a%20bloom.)
Pin this for later
Growing Xeranthemum (Immortelle) in USDA zone 7b: when to start seeds indoors, when to direct-sow, and when to expect a bloom.
Save to Pinterest