Acanthus guineensis Plant Care

Acanthus guineensis (Acanthus guineensis) belongs to the Acanthaceae family within the Acanthus genus. Acanthus guineensis is native to Western Tropical Africa to Congo.

Acanthus guineensis displays a clumping perennial herb growth habit, reaching up to 3 ft tall with a spread of approximately 2 ft. Acanthus guineensis produces tall spikes of hooded white or purple flowers.

Leaf size: approximately 8 inches.

Acanthus guineensis requires watering every 7–10 days. Allow the top layer of soil to dry between waterings to prevent root rot. Reduce watering frequency during winter when growth slows.

Acanthus guineensis thrives in partial shade to full sun.

Acanthus guineensis grows best at temperatures of 60–80°F. Acanthus guineensis prefers humidity levels of 40–70%.

Well-draining soil with added organic matter like compost or peat moss. Good drainage is essential for Acanthus guineensis to prevent waterlogging, which leads to root rot and fungal issues.

Feed Acanthus guineensis every 6 months during the growing season (spring and summer) with a balanced fertilizer diluted to the strength on the label.

Pause feeding in autumn and winter, when growth slows, and never fertilize dry soil — water first.

The PlantoScan app can remind you when to water and when to fertilize each plant.

Repot every 2-3 years in early spring. Choose a pot one size larger than the current container, and ensure it has drainage holes to allow excess water to escape.

Acanthus guineensis can be propagated through division of rhizomes, stem cuttings. Similar propagation techniques also apply to cardoon spurge plant care, which shares the same genus.

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Acanthus guineensis is susceptible to aphids, spider mites, whiteflies. Inspect the foliage regularly, especially along leaf undersides and stems. Treat infestations promptly with insecticidal soap or neem oil to prevent spread.

Yellow leaves, brown tips or drooping? See common plant problems and how to fix them.

Acanthus guineensis grows outdoors in USDA Zone 13a. It survives winters down to planting zone 13a. Acanthus guineensis is native to Western Tropical Africa to Congo. In cooler regions, grow Acanthus guineensis as a houseplant or bring it indoors before the first frost.