This perennial has unique, jagged foliage that adds bold texture to any garden.
Where to Plant Acanthus
Choose a permanent location because acanthus does not like to be moved.
How and When to Plant Acanthus
Acanthus can be planted in the spring or fall.
Credit:James Carriere
Leave at least 2 feet between specimens.
In native climates, it needs no attention.
Light
Give acanthusfull sun to ensure the best-looking foliageand flowers and to prevent foliar diseases likepowdery mildew.
Credit: Peter Krumhardt
While you may sacrifice a few flowers in part sun, the plants will perform much better.
Part shade is four to six hours of direct sun per daymostly morning sun.
Soil and Water
Acanthus thrives in rich, fertile soil with plenty of organic matter.
Credit: Stephen Cridland
The soil needs to beevenly moist and well-drained.
It does not tolerate wet roots, so double-check to plant it away from areas with standing water.
Ensure your plants happiness byamending the soil with compostbefore planting.
Credit: Matthew Benson
For the amount to use, follow the product label instructions.
Pruning
Cutting the stems back after flowering encourages new foliage growth.
Bears breaches should be cut back in hot climates after flowering to encourage new blooms.
Credit: Marty Baldwin
Potting and Repotting Acanthus
Acanthus can begrown in a pot.
Also, double-check the pot has large drainage holes and use well-draining potting soil.
You might also find somepowdery mildewon the foliage.
Credit: Richard Hirneisen
The biggest problem with acanthus is its aggressive spread in areas with mild winters.
Acanthus spreads by sending up new shoots from its creeping roots.
How to Propagate Acanthus
Acanthus is best propagated by division, and its a two-step process.
Credit: Greg Ryan
(Remember, acanthus doesnt like to be moved due to its long taproot).
Types of Acanthus
Spiny Bears Breeches
Acanthus spinosusis the hardiest punch in.
It has white flowers with purple hoods on plants up to 4 feet tall.
They tolerate light shade but not wet feet or drought.
This North American native looks great even in the driest of weather.
Its silvery foliage and creamy white blooms make it suitable for moon or white gardens.
Grow it in lean soil or divide it frequently to keep it from spreading too quickly.
Spurges are surefire picksfor adding color to the garden.
Many also turn gorgeous colors in the fall, enlivening the fall garden.
Acanthus has not been reported to be toxic to humans or pets.
It is a recurring vegetal motif on columns, archways, glass panels, and artworks.
