Growing Guide
 
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Diascia

Annual Flower, Houseplant

Also known as Twinspur
Diascia barbaerae
Scrophulariaceae Family

Twinspur creeps its way through the garden border, adding a lovely splash of color with its upright clusters of pink flowers. It's low-growing habit is also valued in containers and rock gardens. Performs best in cool weather.

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Site Characteristics
Sunlight:
  • full sun

Soil conditions:

  • requires well-drained soil

Special locations:

  • outdoor containers
  • rock gardens
  • indoors as a houseplant
Plant Traits

Lifecycle: annual

Ease-of-care: easy

Height: 0.5 to 1 feet

Spread: 1 to 2 feet

Bloom time:

  • early summer
  • mid-summer
  • late summer
  • early fall
  • mid-fall

Flower color: pink

Foliage color: medium green

Foliage texture: medium

Shape: spreading mass

Shape in flower: flower stalks with upright spikes

Special Considerations
Special characteristics:
  • non-aggressive
  • non-invasive
  • not native to North America - South Africa
Growing Information
How to plant:

Propagate by seed, cuttings - Start seeds indoors 8 to 10 weeks before the last spring frost. After germination, decrease growth temperatures by 5 to 10F. Take cuttings in the spring and summer.

Germination temperature: 60 F to 65 F

Days to emergence: 7 to 14

Maintenance and care:
Deadhead to encourage bloom. Keep watered in hot, dry conditions. Cut the plants back by 3 after the first wave of flowering to encourage growth and additional bloom.

More growing information: How to Grow Annuals

Varieties
Look for flower color variations.

'Pink Queen' rosy pink flowers are delicate and shell-like on 10 plants.