Cyrtanthus

Cyrtanthus is a large genus of the Amaryllidaceae family native to South Africa. Species are found growing in a wide range of habitats including damp bushy stream-edges, as epiphytes on other plants, and in near desert conditions. Unfortunately they are rarely seen in cultivation, and are perhaps not sufficiently known, ever to become popular. A few species adapt well to general cultivation, but for others they require a rather different treatment as to resting periods and watering depending on their areas of origin. Their requirements are sometimes so exact, that they will only ever be grown by collectors and specialist growers. My personal opinion is (don't take that as gospel truth) that Cyrtanthus like a steady, long, moderate to warmish growing season, without sudden shocks of very cold periods, which could also spell disaster. Growing Cyrtanthus species was never meant to be easy, (apart from Cyrtanthus elatus and hybrids) but if successful, will be fascinating, rewarding and very enjoyable. Bill Dijk

The requirements of the more difficult species will have to be understood to be successful. That's why I always grow them in (generous) containers (various sizes according to species), not only for convenience, but mainly to control conditions required at the different times of the season. When it comes to watering, when and how much is important as well. I usually water freely when in active growth and flowering, but soon after flowering and seed collecting, growth slows down and so does watering to the point where I keep them barely damp. Too much water combined with too much cold at this time, again could be detrimental for the plant. BTW: It is a well known fact that many pot plants are lost due to over-watering.

With the potting medium, the main requirements should be good drainage at all times. Our mix consist of 50% composted bark, 25% pumice and 25% sand, to which I add some well decayed mushroom compost, plus a measure of (9-12 months) slow release, well balanced NPK ( + trace elements), low nitrogen fertiliser. Don't think with this (ours) medium your results will be magically solved. I think the climate, the method of cultivation and potting mix together will determine success. It's best to treat each species separate.

Cyrtanthus species seem especially prone to Narcissus bulb fly, at least when grown in California. The larva can attack the bigger bulbs and you may not notice anything wrong until the leaves die back and exploration shows the bulb is soft and being eaten from the inside. Some growers regularly treat their pots with insecticide if they cannot protect the plants.

Cyrtanthus seed pods, Bill Dijk

Cyrtanthus seeds are short-lived and should be treated like like fleshy amaryllids. They can be stored in the fridge for up to 6 months. Seeds are often sown on the surface of a well-drained medium and only slightly covered with sand or grit to keep the seeds in place. However, some of our members have better success in floating the seeds until they sprout and then carefully planting them just underneath the medium surface. This is particularly true if your medium is very well-drained and dry out too quickly for the non-floating method. But regardless of what method you choose, the germinating seeds need to be kept moist.

In late December 2003 Cyrtanthus was the subject of the pbs list TOW. Introductions were provided by Bill Dijk.
Introduction Part 1
Introduction Part 2

Veld & Flora magazine ran a very detailed series of articles on Cyrtanthus in 1990. They were reproduced online by plantzafrica.com. The articles include cultivation advice and information on the various species and hybrids:
General notes and cultivation
Species
Hybrids


See all the species together on a single page, go to the Cyrtanthus species overview? page See all the hybrids together on a single page, go to the Cyrtanthus hybrids overview page

For more photos and information about the species select the appropriate wiki page:

or click on the name in the table below:


Cyrtanthus species
Cyrtanthus angustifolius, Cameron McMaster [Shift+click to enlarge, Click to go to wiki entry]
angustifolius
Cyrtanthus brachyscyphus, Bob Rutemoeller [Shift+click to enlarge, Click to go to wiki entry]
brachyscyphus
Cyrtanthus brachysiphon, Alessandro Marinello [Shift+click to enlarge, Click to go to wiki entry]
brachysiphon
Cyrtanthus breviflorus, Cameron McMaster [Shift+click to enlarge, Click to go to wiki entry]
breviflorus
Cyrtanthus carneus, Cameron McMaster [Shift+click to enlarge, Click to go to wiki entry]
carneus
Cyrtanthus clavatus, Bill Dijk [Shift+click to enlarge, Click to go to wiki entry]
clavatus
Cyrtanthus contractus, Cameron McMaster [Shift+click to enlarge, Click to go to wiki entry]
contractus
Cyrtanthus elatus, Outeniqua Pass, Cameron McMaster [Shift+click to enlarge, Click to go to wiki entry]
elatus
Cyrtanthus epiphyticus, Maclear, Mary Sue Ittner [Shift+click to enlarge, Click to go to wiki entry]
epiphyticus
Cyrtanthus eucallus, Uluwehi Knecht [Shift+click to enlarge, Click to go to wiki entry]
eucallus
Cyrtanthus falcatus, Rob Hamilton [Shift+click to enlarge, Click to go to wiki entry]
falcatus
Cyrtanthus fergusoniae, Cameron McMaster [Shift+click to enlarge, Click to go to wiki entry]
fergusoniae
Cyrtanthus flavus, Cameron McMaster [Shift+click to enlarge, Click to go to wiki entry]
flavus
Cyrtanthus galpinii, Nhu Nguyen [Shift+click to enlarge, Click to go to wiki entry]
galpinii
Cyrtanthus guthrieae, Cameron McMaster [Shift+click to enlarge, Click to go to wiki entry]
guthrieae
Cyrtanthus helictus, Cameron McMaster [Shift+click to enlarge, Click to go to wiki entry]
helictus
Cyrtanthus herrei, Bill Dijk [Shift+click to enlarge, Click to go to wiki entry]
herrei
Cyrtanthus huttonii, Cameron McMaster [Shift+click to enlarge, Click to go to wiki entry]
huttonii
Image not available [Shift+click to enlarge, Click to go to wiki entry]
leucanthus
Cyrtanthus loddigesianus, Bill Dijk [Shift+click to enlarge, Click to go to wiki entry]
loddigesianus
Cyrtanthus mackenii, Cameron McMaster [Shift+click to enlarge, Click to go to wiki entry]
mackenii
Cyrtanthus macmasteri, Cameron McMaster [Shift+click to enlarge, Click to go to wiki entry]
macmasteri
Cyrtanthus macowanii, Waainek, Cameron McMaster [Shift+click to enlarge, Click to go to wiki entry]
macowanii
Cyrtanthus montanus, Cameron McMaster [Shift+click to enlarge, Click to go to wiki entry]
montanus
Cyrtanthus obliquus, Karoo Garden, Roy Herold [Shift+click to enlarge, Click to go to wiki entry]
obliquus
Cyrtanthus obrienii, Cameron McMaster [Shift+click to enlarge, Click to go to wiki entry]
obrienii
Cyrtanthus sanguineus, Mary Sue Ittner [Shift+click to enlarge, Click to go to wiki entry]
sanguineus
Cyrtanthus smithiae, Cameron McMaster [Shift+click to enlarge, Click to go to wiki entry]
smithiae
Cyrtanthus, new species, David Victor [Shift+click to enlarge, Click to go to wiki entry]
sp.
Cyrtanthus spiralis, Bill Dijk [Shift+click to enlarge, Click to go to wiki entry]
spiralis
Cyrtanthus staadensis, Bill Dijk [Shift+click to enlarge, Click to go to wiki entry]
staadensis
Cyrtanthus stenanthus var. stenanthus, Nhu Nguyen [Shift+click to enlarge, Click to go to wiki entry]
stenanthus
Cyrtanthus suaveolens, Cameron McMaster [Shift+click to enlarge, Click to go to wiki entry]
suaveolens
Cyrtanthus tuckii, Uluwehi Knecht [Shift+click to enlarge, Click to go to wiki entry]
tuckii
Cyrtanthus ventricosus, Cameron McMaster [Shift+click to enlarge, Click to go to wiki entry]
ventricosus

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Page last modified on March 15, 2016, at 04:19 PM