Natal Plum
Carissa macrocarpa
Tender below -2C and quick to rot in wet ground — a shrub for warm corners with sharp drainage.
- Type
- Fruit · Perennial
- Botanical family
- Mixed / other
- Foliage color
- Green
- Flower color
- Red
- Sunlight
- Full sun
- Feeding
- All-purpose balanced
- Frost tolerant
- Yes
- Flowering
- April
- Apr–Jun Flowering
- Jun–Aug Fruit Set
- Aug–Nov Harvest
- Nov–Dec Growing
- Jan–Apr Growing
- Plant spacing
- 6 ft 7 in
- In-row spacing
- 6 ft 7 in
- Between rows
- 6 ft 7 in
- Square-foot density
- Not suited to SFG
- Root system
- Woody and fibrous
- Working depth
- 12–24 in
- Can reach
- 3 ft down where the soil allows
- Spread
- 12–16 ft across, about 1.5–2× the width of the plant
- Shallowest pot
- 20 in of soil
A shallow woody framework with the fine feeding roots in the leaf litter above it. Those feeders are mostly under the outer half of the canopy rather than against the stem, which is where water and feed should go.
The habit is Natal Plum’s own; the figures are what that habit usually comes to at this size, not a measurement of this species. Roots follow the soil either way: a compacted pan, a high water table or heavy clay stops them well short of any of it, and deep open ground lets them go further.
- Cats and dogs
- Confirmed safe
We say a plant is safe only where a named poison-control reference names that exact species and records it as non-toxic to both cats and dogs. Most plants are on nobody’s list, and their absence here is not a judgement about them. This is a record of what those references say, not veterinary advice, and it cannot account for your own animal, the quantity eaten, or a plant treated with anything.
Carissa grandiflora is the ASPCA's printed name for our Carissa macrocarpa. Dogs, cats and horses are all named.
- Mealybugs White cottony sap-suckers that gather in leaf axils and along stems, mostly on houseplants and under glass. Dab colonies with a cotton swab dipped in soapy water and isolate affected plants.
- Scale insects Immobile brown or white bumps fixed to stems and leaf undersides, sucking sap and weakening growth. Wipe off with a damp cloth or dab with horticultural soap; watch for the sooty mold that follows.
- Root & crown rot Root rot in waterlogged soil
- Frost damage Frost damage, since it turns tender below -2C
Beneficial predators that hunt this plant's pests — grow their favourite flowers nearby to recruit them. companion plant
- Hoverfly Syrphidae
Bee-mimicking flies whose legless larvae graze aphid colonies clean while the adults pollinate. A ribbon of shallow, nectar-rich flowers kept in bloom all season recruits wave after wave of them.
- Ladybird (lady beetle) Coccinellidae
The gardener’s favorite ally: adults and their alligator-shaped larvae each eat thousands of aphids, plus scale, mealybugs, and other soft-bodied sap-suckers. Grow flat, open flowers for the adults and never spray a colony that ladybird larvae are already working.
- Green lacewing Chrysoperla carneaHunts Mealybugs
Its bristly larvae — "aphid lions" — impale aphids, mealybugs, thrips, and mite colonies, eating hundreds a week. Adults feed on nectar and pollen from small open flowers and overwinter in hollow stems left standing.
Agapanthus, Rosemary, Plumbago
Green-leaved fruit, like this one.
The Cottage Garden Companion — the gardener's herbarium at cottagegardencompanion.com