Citronella Plant (Mosquito Plant) in Zone 7a & 7b
Pelargonium citrosum
Yes, citronella plant (mosquito plant) grows in zones 7a and 7b. Set out nursery plants Apr 17–Apr 24.
When to plant citronella plant (mosquito plant) in zone 7b
Zones 7a and 7b share the same average frost dates, so this page covers both.
Method: Buy as a start: Buy as a nursery start and transplant outside. It's slow or unreliable from seed, so most gardeners skip seed-starting it entirely.
| Start indoors | Not started from seed; buy as a nursery start |
|---|---|
| Direct sow / transplant outside | Apr 17–Apr 24 |
| Estimated harvest | Jun 16–Jun 23 (~60 days after transplanting) |
Spacing: about 4 square feet per plant (square-foot-gardening spacing). Mature height: 2-3 ft.
Plant alongside it in zone 7b
These go outside within two weeks of citronella plant (mosquito plant) in zone 7b, so one planting day can cover them.
- BasilApr 24–May 1
- BorageApr 10–Apr 17
- RosemaryApr 24–May 1
- DillApr 3–Apr 10
- CatmintApr 17–Apr 24
- Garlic Chives (Chinese Leeks)Apr 17–Apr 24
This is a scented geranium marketed as a mosquito plant. The scent is lovely. The mosquito claim does not survive contact with the evidence.
How citronella plant (mosquito plant) fits zone 7's season
Zone 7b's frost-free window runs about 198 days, from April 10 to October 25. Citronella plant (mosquito plant) needs about 60 days from transplant to first harvest.
Citronella Plant (Mosquito Plant) 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 | Harvest |
|---|---|---|---|
| 4a & 4b | Buy as a start | May 22–May 29 | Jul 21–Jul 28 |
| 5a & 5b | Buy as a start | May 17–May 24 | Jul 16–Jul 23 |
| 6a & 6b | Buy as a start | May 2–May 9 | Jul 1–Jul 8 |
| 7a & 7b (your zone) | Buy as a start | Apr 17–Apr 24 | Jun 16–Jun 23 |
| 8a & 8b | Buy as a start | Apr 1–Apr 8 | May 31–Jun 7 |
| 9a & 9b | Buy as a start | Feb 22–Mar 1 | Apr 23–Apr 30 |
| 10a & 10b | Buy as a start | Feb 6–Feb 13 | Apr 7–Apr 14 |
| 11a & 11b | Buy as a start | Jan 8–Jan 15 | Mar 9–Mar 16 |
Harvest dates are about 60 days after the sow or plant-out date.
Good companions
No well-established companions for citronella plant (mosquito plant).
Where to buy citronella plant starts
Citronella plant (mosquito plant) is almost always bought as a nursery start rather than seeded. Check a local nursery or garden center; we haven't vetted online start/plant suppliers yet.
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See it growing
Search YouTube for "growing citronella plant (mosquito plant)" 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 →
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Growing Citronella Plant (Mosquito Plant) in USDA zone 7b: when to start seeds indoors, when to direct-sow, and when to expect a harvest.
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