Black in the Garden - Aeonium 'Zwartop'

Black in the Garden - Aeonium 'Zwartop'

We love Aeonium ‘Zwartcop’.  It’s a tender branching succulent that can grow up to 1.2 metres high and is a perfect specimen to have as an architectural centrepiece in pots or troughs.  Lucky inhabitants of Cornwall or The Isles of Scilly will be very familiar with these stunning plants as they are often grown in front gardens where they happily survive outside all year round.

Increasing your stock is easy with these obliging growers.  A side branch can be simply cut off and potted up as a new plant.  Just make sure you leave the cut exposed to the air for several days, even a week, before potting; a callous will form before rooting can take place.  A really well draining gritty mix of compost is preferable and watering should be kept to a minimum.  If your plant becomes too big it can be simply cut off at the base.  Leave a bit of ‘trunk’ and new shoots will appear from it.  The amputated portion can be raided for its numerous offshoots that can also be potted up.

‘Zwartcop’ is an exceptionally black form of Aeonium arboreum ‘Atropurpureum’.  The darkness improves in high summer temperatures. Both will need overwintering in a bright frost free environment.  Don’t be surprised if the rosette of leaves starts to turn green and the black foliage becomes less pronounced. This is quite normal and all will return to normal as the temperatures increase in spring.

You may also like

View all

Modern heroes of horticulture - Jamie Langlands

For some garden designers, the journey begins with plants.  For Jamie Langlands, it began with art. Growing up in Dorset, surrounded by the wild cliffs of the Jurassic Coast, rolling...
Read More

Technology in the garden - soil moisture sensor

We've all done it.  Stuck a finger into the soil, decided it feels a bit dry and reached for the hosepipe.  But what if your garden could tell you when...
Read More

Garden review: Waterperry Gardens, Wheatley, Oxfordshire

This eight-acre Oxfordshire garden was established in 1932 by Miss Beatrix Havergal as the School of Horticulture for Ladies.  A stern and spirited lady, she ran the school until 1971,...
Read More