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 10°F. 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.