Feed Euphorbia milii monthly with a low-nitrogen liquid fertilizer during active growth. Keep the plant dry in winter instead of carrying the active-growth routine into dormancy.
Crown of thorns fertilizer: when to feed
Feed Euphorbia milii during active growth with a low-nitrogen liquid fertilizer. Follow the product label, and reduce or stop the routine during a dry winter rest.
Plant coveredEuphorbia miliiCrown of thorns · indoor and outdoor
Check for active growth
When to fertilize
Tie feeding to active growth and reduce or stop it during the dry winter rest. A warm, bright indoor plant may not follow the same season as a warm-climate outdoor specimen.
Follow the product label
Fertilizer type and dose
Choose a low-nitrogen liquid fertilizer suited to a succulent or flowering Euphorbia container. Follow the product label. No brand or formulation is universal.
Use the manufacturer’s dilution and never exceed it. The amount depends on the fertilizer, pot, and plant. No universal volume is supported.
Inspect a stressed plant before feeding
When not to fertilize
If salts are building up, roots are damaged, or the plant has been kept too wet, pause feeding and inspect the mix and roots before adding nutrients. Too much fertilizer can burn sensitive succulent roots.
Sources
- Royal Horticultural SocietyHow to Grow > Cultivation; feed; winter; suggested planting locations
- University of Wisconsin-Madison Division of ExtensionCare; light; watering; propagation