Border Builder

Annual Phlox

Phlox drummondii

Illustration of Annual Phlox

Annual Phlox is an annual for edging, groundcover, suited to full sun to partial shade and clay or loam, flowering Jun, Jul, Aug, Sep.

TypeAnnual
Mature height40 cm
Spread25 cm
Aspectfull sun to partial shade
FoliageDeciduous
HardinessUSDA 3a-10b, RHS H7
Pollinator-friendlyYes
Pet-safeYes

Where to use it in a border

At around 40 cm, it sits best along the front edge, where a low, spreading habit reads best. Give it about 25 cm of room to spread, roughly 4 to the metre when planted in a drift. It is hardy across USDA zones 3a to 10b and rated H7 by the RHS, so check it suits your area before planting.

It appears in our lists of full sun, clay soil, pollinator-friendly plants, pet-safe plants.

Border Builder uses Annual Phlox's height, spread, soil, bloom months and companions to place it in a full border plan for your own conditions, on iPhone and iPad.

Download on the App Store

Flowering through the year

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Worth knowing

Good companions

Plants that share its conditions and style, chosen to complement its place in the border:

Garden styles

Wildlife garden

Sources

Bloom timing and hardiness drawn from: