Dahlia imperialis ‘Double White’

Dahlia imperialis ‘Double White’ – a tree dahlia. This double-white form has lots of white petals, resembling a big, white pom-pom around 10 – 15cm across.

A dramatic plant, with tall, bamboo-like stems, and lush, tropical foliage reaching up to 15 feet tall. The flowers sprays of the Tree Dahlia are very large and often carry around a dozen flowers.

Packs 1 - 2 3 - 8 9 - 14 15+
Price per pack £6.28 £5.27 £4.64 £4.20

£6.28 (inc. VAT)

Pack of 1 tuber(s)

36 pack(s) in stock

More Information

Dahlia imperialis ‘Double White’ – a tree dahlia. This double-white form has lots of white petals, resembling a big, white pom-pom around 10 – 15cm across.

A dramatic plant, with tall, bamboo-like stems, and lush, tropical foliage reaching up to 15 feet tall. The flowers sprays of the Tree Dahlia are very large and often carry around a dozen flowers.

Growing Tree Dahlias

Plant your Tree Dahlia Tuber in well-draining soil and water regularly. Either full sun or a half-day of sun is fine, and it will benefit from some protection from the wind.

The Tree Dahlia is not really a tree, but a tuberous perennial, like other dahlias. This species takes a while to mature and flowers late in the year, around November/December. Unfortunately, frost during that time may kill the flower buds. In winter, after it flowers, you may cut the plant back to the ground and new growth will come up again in the spring.

Storing Dahlia Tubers

Dahlias are not frost hardy and may need to be lifted in November. In well-drained soils, leave the tubers in the ground and mulch over to protect against frosts. In colder climates, or heavier soils, lift and store your dahlia tubers over winter.

If you are lifting and storing over winter, cut back foliage and carefully lift your dahlia tubers out of the soil. Allow them to dry off naturally and clean away any soil. Trim the stems and cut off any fine roots. Make sure the tubers are completely dry before storing them in open trays or boxes. Pack with dry sand or vermiculite. Leave the crowns exposed and keep them frost free.

Replant your Dahlia tubers the following spring.

If you left them in the ground, once the risk of frosts have passed and you start to see signs of growth again, the mulch can be removed.

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