How to Grow Diascia


Diascia is a genus of flowering plants belonging to the plant family Scrophulariaceae. It includes over 100 species native to South Africa, mainly in the Eastern and Western Cape provinces. The genus is known for its long-flowering, low-growing habit and showy flowers, making it a popular addition to flower beds and borders.

Diascia can also be grown in containers or hanging baskets. The flowers come in shades of pink, red, purple, and white, often with contrasting dark centers. Some species have variegated foliage as well.

These are generally easy-to-grow plants that do best in full sun or partial shade and require little maintenance other than occasional deadheading to encourage more blooms. With proper care, they will flower from mid-summer through the fall.

Diascia plants can also be propagated easily from stem cuttings or division of the roots. These make excellent gifts for gardeners, especially those with smaller gardens who want to enjoy an abundance of color and texture without taking up too much space. With their low-growing habit and fast-blooming flowers, Diascia will add a splash of color to any garden.

Overview How to Grow Diascia

Diascia plants are relatively easy to grow and require little maintenance. They prefer full sun or partial shade and well-drained soil with a pH between 5.5 and 7.0. Water the plants regularly, but do not allow them to become waterlogged. Fertilize the plants with a balanced fertilizer once every two weeks during the growing season; organic options are also available.

To keep these plants looking their best, deadhead spent blooms to encourage new growth and more flowers. Pruning is also beneficial, as it can keep the plants tidy and promote bushier growth. If grown in containers or hanging baskets, they should be replanted annually in a slightly larger pot with fresh soil.

With proper care, these plants will flower heavily throughout the growing season and provide long-lasting color to any garden. They also make great gifts for the gardener in your life!

10 Ways How to Grow Diascia

Sun Exposure

Diascia plants prefer full sun or partial shade. They can tolerate some shade, but this will reduce flowering and may cause the plant to become leggy.

Soil Preparation

The best soil for Diascia is well-drained and slightly acidic (pH 5.5 to 7.0). If the soil is too alkaline, add some compost or other organic matter to raise the acidity.


Diascia plants need regular watering, but take care not to overwater as this can cause root rot.


In order to promote healthy growth and abundant blooms, it is important to feed Diascia plants with a balanced fertilizer once every two weeks during the growing season. Organic fertilizers such as sheep manure or compost tea are also suitable for Diascia plants. These options provide slow-release nutrients that are gentle on the soil and beneficial to the environment.


Mulching around Diascia plants helps maintain soil moisture and keep the roots cool. Organic mulches such as shredded bark, leaves, or straw work best.


Regular deadheading (removal of spent blooms) is necessary in order to encourage more blooms and keep your Diascia plant looking its best.

Pest and Disease Control

Diascia plants are generally resistant to pests and diseases, but watch out for aphids and powdery mildew. If you have an infestation, treat it as soon as possible with an appropriate pesticide or fungicide. estationestation,, treat it with an appropriate appropriate insect insecticide or fungicide


Diascia plants can benefit from regular pruning. This helps to keep the plant tidy, encourages bushier growth and more blooms. Prune lightly in early spring, before the plants start to bloom.

Companion Planting

Diascia plants make excellent companion plants for other annuals and perennials. They look great planted in combination with roses, lavender, and daisies.

Propagation by Cuttings

Diascia plants can easily be propagated from stem cuttings. Take the cuttings early in the season and plant them in moist, well-draining soil. Make sure to keep the cuttings moist and in a bright, warm location until they have rooted.

Proper Plant Spacing

Proper spacing is essential for healthy Diascia plants. Depending on the variety, these plants should be spaced anywhere from 6 to 18 inches apart. This allows for good air circulation and prevents overcrowding.


With the right care and maintenance, Diascia plants are sure to bring a splash of color to any garden. With their cheerful blooms and graceful foliage, they make excellent additions to flower beds and containers alike. They are easy to propagate and require minimal care once established. For best results, follow these tips for sun exposure, soil preparation, watering, fertilization, mulching, deadheading, pest and disease control, pruning, companion planting and proper plant spacing. With the right care and nurturing, you will be rewarded with a bounty of beautiful blooms all season long!

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