Euphorbia horridaBoiss .
African Milk Barrel
Euphorbia horridavar.horrida
Family : EuphorbiaceaeSubfamily : EuphorbioideaeTribe : EuphorbieaeSubtribe : EuphorbiinaeGenus : Euphorbia
Euphorbia horridais a clump - formingsucculentwith erect , cylindrical stems with 10 to 20 flatten , often rippled ribs build up with orange or grey-headed , spine - like structures . It offset from the substructure , forming a dense thud with years . The stems can get up to 4.9 foot ( 1.5 m ) tall and 6 in ( 15 cm ) in diameter . The theme color varies from blue - grey to gray - leafy vegetable . The spine - like social organization are dry remnant of the cyathia stalks . They are inflexible and can pass up to 1.6 inch ( 4 centimetre ) in distance .
The solitary cyathia are gullible - yellow and appear along the ribs at the apex of the stems in summertime .
USDA hardiness zones9b to 11b : from 25 ° F ( −3.9 ° C ) to 50 ° F ( +10 ° C ) .
Euphorbias are very easy to care for . These plants want a picayune cosset to become established , but once they are , they are self - sufficient . More cash in one’s chips from too much care and watering than from neglect . Euphorbias needwell - debilitate soiland hatful of sunshine . They are not particular about grime pH but can not abide wet soil . Unlike most succulent , Euphorbiadoes not handle long periods of drouth well . It may need hebdomadal watering during the summertime . Waterwhenever the dirt is dry several column inch below the surface . pee deeply , but do n’t lease them baby-sit in wet dirt , which can get tooth root rot . Add some constitutional affair or fertiliser to the planting maw . Feed with a half - strength fertiliser monthly if you are growing them in containers or your grunge is wretched .
These succulents can be grown from ejaculate , but they can be difficult to pullulate ( or even get hold ) . They are usually propagated by cutting . This can be tricky because of the exuding sap . settle down hormone is recommended withEuphorbias . They tend to grow problem - free , but there are a few pests and diseases to be brisk for .
See more atHow to spring up and Care for Euphorbia .
This species is aboriginal toSouth Africa .
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