Clockweed is a North American grown in sunny U.S. gardens, where it blooms through summer and fall. Its white flowers open on long, wiry stems and often turn pale pink as they age. It is also called white gaura.

Appearance

Growth form
This clump-forming perennial usually reaches 3–5 ft (0.9–1.5 m) tall and 1–2 ft (0.3–0.6 m) wide. Its wiry stems may lean or arch.
Leaves
The simple leaves are narrow or spoon-shaped and alternate up the stems. Fine hairs and shallow teeth may be visible in a close photo.
Flowers
Each flower has four upward-angled petals around eight long yellow stamens. Pink buds open white, then often age to pale pink, with only a few flowers open on each at once.
Flowering time
In the United States it blooms from summer into fall, often continuing until the first frost.
Fruit
A small green, nutlike fruit follows the flower and matures gray-brown in fall. It does not split open and holds reddish-brown seeds.

Look-alikes

spider flowerCleome houtteana

Spider flower has leaves divided into several leaflets and a much denser cluster of flowers. Clockweed has undivided, narrow leaves and a loose wand of white or pink flowers.

Why they get mixed upBoth can grow tall in U.S. gardens and have airy pink or white flowers with long stamens.

Where it lives

Typical habitats
  • prairies
  • pine flatwoods
  • pond edges
  • sunny gardens
Range
It is native to southeastern Texas and southwestern Louisiana. It is also grown far beyond that small native range as a garden plant.
Preferred conditions
Give it full sun and moist but well-drained soil. Its helps an established plant handle heat and short dry spells, while soggy soil can lead to root rot.

Growing it

Propagation
Gardeners can propagate it by seed, division, or stem cuttings.

Name and classification

About the name
It was previously called Gaura lindheimeri.
Varieties and forms
Cultivars range from white to deep pink and include compact, tall, and variegated-leaf forms.

Conservation

IUCN Red List
NENot EvaluatedNot yet assessed

Culture and stories

Culture and stories
  • The species honors Ferdinand Jacob Lindheimer, a nineteenth-century plant collector in Texas.
clockweed (Oenothera lindheimeri) — identification, habitat & look-alikes | Moeyo