Phlox (Annual) in Zone 2a & 2b
Phlox drummondii
When to plant phlox (annual) in zone 2b
Zones 2a and 2b share the same average frost dates in our data, so this page covers both.
Method: Either: Start indoors for an earlier harvest, or direct-sow outside for less fuss. Phlox (Annual) tolerates either.
| Start indoors | Apr 15–Apr 22 |
|---|---|
| Direct sow / transplant outside | May 13–May 20 |
| Estimated bloom | Jul 22–Jul 29 (~70 days after planting) |
Spacing: 2 per square foot (square-foot-gardening spacing). Mature height: 0.5-1.5 ft.
Annual phlox is a compact, fast, and easy bedding flower in unusually bright, saturated colors, worth telling apart from the taller, perennial garden phlox that shares the common name but grows and behaves quite differently.
How phlox (annual) fits zone 2's season
Zone 2b's frost-free window runs about 104 days, from May 20 to September 1. Phlox (Annual) needs about 70 days from sowing to first harvest.
Good companions
No standout companions recorded yet for Phlox (Annual).
Where to buy phlox seeds
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 genuine consensus of positive, independent reviews. See the sources cited on each item.
See it growing
Search YouTube for "growing phlox (annual)" videos → (a live search, not a hand-picked video; results vary and aren't vetted by us)
← Back to the full zone 2b calendar · Full companion planting guide · Full plant profile · Plan your beds in the Garden Designer →
%20in%20USDA%20zone%202b%3A%20when%20to%20start%20seeds%20indoors%2C%20when%20to%20direct-sow%2C%20and%20when%20to%20expect%20a%20bloom.)
Pin this for later
Growing Phlox (Annual) in USDA zone 2b: when to start seeds indoors, when to direct-sow, and when to expect a bloom.
Save to Pinterest