Growing guide

How to grow annual phlox

Flowering throughout summer, half-hardy annual phlox, Phlox drummondii cultivars and seed mixes, can add colour to borders and large containers. Alternatively, use them to fill in gaps at the front of your borders.

Save to My scrapbook

Quick facts

  • A half-hardy annual that's good for bedding and pots
  • Enjoys a spot that’s sunny for most of the day
  • Flowers from summer until autumn
  • Sow in spring
  • Plant out in early summer
  • Water in dry spells
  • Deadhead old, faded flowers

All you need to know

Before you get started
Planting
Ongoing care
Propagating
Problems
While we think all this information will be helpful to you, we always recommend to read the instruction labels on your plants.

Get involved

The Royal Horticultural Society is the UK’s leading gardening charity. We aim to enrich everyone’s life through plants, and make the UK a greener and more beautiful place.