Dietes grandiflora attributes


0.8 to 1 m (h) – 1.5 m (w)



Growth Rate





Caring for Dietes grandiflora

When to plant

September – October

How to plant

The Dietes grandiflora is easily grown from seed or propegation by dividing the large clumps.

The Dietes grandiflora is also a self-sower and spreads rapidly.

When to transplant or divide

Transplant Dietes grandiflora on a cool or cloudy day, or in the late afternoon.

How to transplant or divide

Water the soil the day before to loosen the roots and surrounding dirt.

Dig a hole twice as wide as the plant roots to help the roots spread.

Use a garden fork to lift the roots gently from the soil before transplanting to the new hole.


November to January

The delicate flowers appear in summer and lasts three days. They appear in groups with intervals of a few days to two weeks usually just before or after it has rained.

Cut back brown and yellow leaves to the base of the greenery as and when needed.

If you want to prevent self seeding, don’t cut the flower stalk as this may result in a few years before you see flowers again. Cut just under the green seedpod with scissors to remove it.

You can cut back the entire plant in autumn to promote new growth in the spring, but be sure to water the plants generously and apply a balanced fertilizer after the cutting.

When to ferilise

At the beginning of the bloom season.

How to Fertilise

Use a high phosphorus fertiliser.

Dietes grandiflora flourishes in a full sun spot with well composted and well drained soil.

Though the Dietes grandiflora is a drought tolerant plant, it will flourish if watered well in the summer.

Propagating Dietes grandiflora

Propagate Dietes grandiflora from seed or by division. The best time to sow and divide the Dietes grandiflora is in spring.

When propagating by seed

Dietes grandiflora can be sown directly into the soil in the spring, but can take many years to germinate.

When propagating by division

Water the plants you want to divide the day before to help loosen the plant roots.

Use a pitchfork to lift a large clump, and divide the clump using a spade.

Dig a hole twice as wide as the plant roots to help the roots spread. Ensure that you prepare the hole with a high-quality compost.

After planting, water the plant thoroughly to remove any air pockets and keep the soil moist until the plant is established.

Troubleshooting Dietes grandiflora problems

Dietes grandiflora are tough plants with no common pests or problems.

Benefits and uses of Dietes grandiflora

  • It is a low maintenance drought tolerant plant ideal for the lazy gardener.
  • It is a popular landscaping plant and is also used effectively and an accent plant next to a pond or steps.


  • Photo By Rojer Wisner – originally posted to Flickr as 100_3503 White Yellow & Lavender, CC BY 2.0,