This spiny succulent could easily be mistaken for a cactus. Its green branches have between 5 to 8 ribs. Each rib has spins along its ridges. As it grows, it spreads out, creating a shrub-like bush. Watch for dark red flowers.
Full sun to partial shade
Not suited for indoor growing
Typical water needs for a succulent. Do not water in the Winter.
Plant grows up to 4′ (1.2 m) tall
Plant grows up to 3′ (.9 m) wide
Zone 10a (Minimum 30° F | -1.1° C)
Not cold hardy
Propagation by stem cuttings and seeds
Can be toxic to humans and animals
Actively grows in Spring and Fall
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Care and Propagation Information
General Care for Euphorbia echinus
Euphorbia echinus is a great addition to rock gardens or planters. As it grows, it spreads out as a small shrub.
Euphorbia echinus has typical watering needs for a succulent. It’s best to use the “soak and dry” method, and allow the soil to dry out completely between waterings. Do not water in the Winter when it is dormant.
Where to Plant
Euphorbia echinus is not cold hardy, so if you live in a zone that gets colder than 30° F (-1.1° C), it’s best to plant this succulent in a container that can be brought indoors. It does well in full to partial sun.
Plant in an area of your garden that gets 6 hours of sunlight a day.
Pairs Well With
How to Propagate Euphorbia echinus
Euphorbia echinus can be propagated from stem cuttings or seeds.
To grow Euphorbia echinus from cuttings, follow the directions in this post to learn how to handle a cactus safely.
Using the tongs, gently pull one of the cylindrical stems away from the main cluster. If you are not able to break it off without pulling up the rest of the plant, use the knife to cut through the stem.
Allow the end of the stem to callous over for several days before placing in well-draining soil.
Seeds can be collected from the fruit of a mature Euphorbia echinus. Sow your seeds in a well-draining soil. You can grow Euphorbia seeds outdoors if you live in an zone above 9a. If you live in a cooler area, you can begin sowing indoors under a grow light or on a seed mat.
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