Plants of the genus Buphthalmum have the common names of Sun Wheel, Ox-eye or Ox-eye daisy.
They make ideal border plants.
Buphthalmum salicifolium (Yellow Ox-eye Daisy) by Breki74.
Buphthalmum Ochsenauge by Hans-Jürgen Becker.
Common Names: Ox-eye Daisy, Sun Wheel. Ox-eye: Willow-leaf; Yellow.
Life Cycle: Hardy perennial.
Height: 12 to 24 inches (30 to 60 cm).
Native: Europe, Asia.
Growing Region: Zones 3 to 8.
Flower Details: Yellow. Daisy-like ray and disc florets. Fine petals.
Foliage: Herbaceous. Elliptic to Lance-shaped.
Sow Outside: Surface. Spring or autumn. Spacing 8 to 12 inches (20 to 30 cm).
Sow Inside: Germination time: two weeks to one month. Temperature 70°F (21°C). Sow in early spring. Transplant outdoors following the last frost.
Requirements: Full sunlight or light shade. Good drainage. Soil pH 6.5 to 8.0. Moist soil, limey soil, poor soil. Provide support. Thin out. Propagate: dividing in the spring or at the start of autumn.
If planning to grow Buphthalmum outdoors then seeds can be sown on the surface in either the spring or the autumn.
When growing ox-eye and related species indoors first they should be grown in the light at a temperature of 21 to 23°C, and take from two to four weeks to germinate. Seedlings should be planted out in mid-spring (once a frost is no longer possible) into a moist but well drained soil with a pH of 6 to 8.
They should be planted at between 20 and 30 cm apart. Buphthalmum are easy to look after, though taller varieties may require staking to protect from wind.