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Osteospermum, African Daisy, Cape Daisy 'Voltage Yellow'


Family: Asteraceae (ass-ter-AY-see-ee) (Info)
Genus: Osteospermum (oss-tee-oh-SPUR-mum) (Info)
Cultivar: Voltage Yellow



Tropicals and Tender Perennials

Foliage Color:

Unknown - Tell us

Bloom Characteristics:

Flowers are good for cutting

This plant is attractive to bees, butterflies and/or birds

Water Requirements:

Drought-tolerant; suitable for xeriscaping

Average Water Needs; Water regularly; do not overwater

Where to Grow:

Suitable for growing in containers


12-18 in. (30-45 cm)


12-15 in. (30-38 cm)


USDA Zone 10a: to -1.1 C (30 F)

USDA Zone 10b: to 1.7 C (35 F)

USDA Zone 11: above 4.5 C (40 F)

Sun Exposure:

Full Sun


Unknown - Tell us

Bloom Color:

Bright Yellow

Bloom Time:

Mid Spring

Late Spring/Early Summer

Mid Summer

Late Summer/Early Fall




Provides winter interest

Other details:

Unknown - Tell us

Soil pH requirements:

6.1 to 6.5 (mildly acidic)

6.6 to 7.5 (neutral)

7.6 to 7.8 (mildly alkaline)

Patent Information:


Propagation Methods:

From herbaceous stem cuttings

From softwood cuttings

Seed Collecting:

Unknown - Tell us


This plant has been said to grow in the following regions:

Satsuma, Alabama

Arcadia, California

Suffolk, Virginia

South Hill, Washington

Gardeners' Notes:


On May 4, 2014, peejay12 from Porthleven, Helston, Cornwall,
United Kingdom (Zone 9b) wrote:

I must say, I wonder why the breeders decided to make the flowers of this plant look like a common yellow marigold or (from a distance) a common old dandelion. Still, there must be method in their madness - -

I've just ordered five 'plug plants', and I'll let you know how I get on. I would think it's hardy down to -5C in the US, but much less hardy in the UK (see comment below).

29th June Edit: The plug plants have been very slow growing -- some Osteospermums don't grow much after June.

There aren't many good perennial yellow osteospermums available, unless you want to order seed of species from Silverhill seeds (SA).** I'll try to take cuttings, but with some modern cultivars this is very difficult, and they often don't produce seed -- ... read more


On Apr 10, 2013, cleanattic from Suffolk, VA wrote:

Just bought this for the first time, in a hanging basket. I have other African daisies in the ground. I liked it's bloom time thru fall and it can take our heat.


On Dec 28, 2012, stephenp from Wirral, UK, Zone 9a,
United Kingdom (Zone 9a) wrote:

It's a little hardier than zone 10a, but ours has overcome -3C, looks a little scruffy, but now it's fairly mild, is throwing up more flowers. This one will surely flower all year round if given the chance. If it survives the winter it will be interesting.. despite frost not being too prevalent here, the moist ground is usually a problem, however this Osteospermum has dealt admirably with that, with only minor frost damage. The neutral is for the fact the leaves can look scruffy in winter if frost occurs.

Finally died at -4C (25F) last year (hardiness between -2C and -3C, 29F and 28F)