Species pincushion flower
purple-blue flower with purple filaments, pink anthers, green leaves and stems

pincushion flower

Scabiosa japonica 'Blue Diamonds'

The pincushion flower (Scabiosa japonica 'Blue Diamonds') is an eye-catching, long-lasting bloomer. Its electric blue flowers with soft lavender centers stand out against its deep-green foliage. It blooms from late spring until frost, and prefers full sun and sandy soil. Each flower head is only about 1 inch across, but if planted in groups, they create an impressive show. This plant can handle drought conditions and is deer and rabbit resistant, making it an excellent choice for tough landscapes.

Cycle:

Herbaceous Perennial

Watering:

Average

Propagation:

Division,Cutting,Seed Propagation,Layering Propagation

Hardiness Zone:

4 - 8

Flowers:

Lilac blue Flowers

Sun:

Full sun,part shade

Leaf:

Yes

Leaf Color:

purple,white

Growth Rate:

Low

Maintenance:

Low

Drought Tolerant:

Yes

Care Level:

Medium

watering

The pincushion flower should be watered about once a week, or when the soil is dry about 1-2 inches below the surface. Be careful not to over-water as the plant does not need a lot of moisture; it can even tolerate brief periods of drought. During the warmer months, water the plant lightly and more often to keep the soil slightly damp. As the plant enters its blooming cycle during the summer months, reduce watering slightly until the flower buds begin to dry and fade. After that, reduce watering until the plant is mostly dormant in the winter and resume a normal watering schedule in early spring.

sunlight

Pincushion flower (Scabiosa japonica 'Blue Diamonds') requires full sun to partial shade with an average of 6-7 hours of direct sunlight per day, ideally in the morning or late afternoon. The plants can tolerate some light shade and may still bloom in slightly shadier conditions, particularly those with evening shade. Late afternoon shade is especially important in more southern regions to prevent sunburn and wilting caused by intense midday heat.

pruning

Pincushion flower (Scabiosa japonica 'Blue Diamonds') should be pruned regularly for optimal blooms. Pruning is best done in the spring when new growth appears, usually in March/April. Prune off the old stems a few inches down from the base and remove any dead or damaged leaves or stems. This will allow the plant to put energy into new growth which leads to more blooms. Pruning should continue in the summertime, once more blooms have appeared, by pinching the tips of the stems back as far as desired. This will encourage the plant to produce bushier growth which can lead to more blooms. Removing spent blooms throughout the growing season will also help to promote new blooms.

Season

Fall
Winter
Spring
Summer
Sep
Oct
Nov
Dec
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Starts Flowering

Scabiosa japonica 'Blue Diamonds' typically start flowering in late spring, usually in May or June.

Starts Flowering

Scabiosa japonica 'Blue Diamonds' typically start flowering in late spring, usually in May or June.

Hardiness Map