Photo by Melody

PlantFiles: African Daisy, Cape Daisy
Osteospermum 'Voltage Yellow'

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

One vendor has this plant for sale.

Tropicals and Tender Perennials

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


Other details:
This plant is attractive to bees, butterflies and/or birds
Drought-tolerant; suitable for xeriscaping
Average Water Needs; Water regularly; do not overwater
Flowers are good for cutting
Provides winter interest
Suitable for growing in containers

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

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Thumbnail #1 of Osteospermum  by DaylilySLP

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No positives
3 neutrals
No negatives

Gardeners' Notes:

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

This plant has been given a lot of good publicity and I hope it's longer lived than the 'Symphony' plants.

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 -- and seed may not 'come true'. Taking cuttings for your own use is OK.

It's possible it may survive average winters in Cornwall with protection (a layer of fleece or material). Gazanias do. But perfect drainage is essential. Otherwise, why not just plant Calendula 'Starfire'?

**If ordering seed from Silverhills seeds look under 'Dimorphotheca'. Yes, contrary to so-called 'experts' there ARE many perennial Dimorphotheca species (look in a good botanical book)!

Neutral cleanattic 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.

Neutral stephenp 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)


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

Satsuma, Alabama
Arcadia, California
Suffolk, Virginia
South Hill, Washington

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