A branched and very spiny relative of the cholla. Large club-like stems, 4″ long spines. Grows wide, not tall. Protect from frost.
Sun
Gymnocalycium
A genus of nearly 100 species of flowering small barrel cactus, many sought by collectors. Their defining feature is the flowers have a distinctive naked calyx (flower buds).
Gymnocalycium amerhauseri
Solitary small round, flattened cactus with spider-like recurved spines and beautiful small white flowers, frequently with red or burgundy hints. Keep dry in winter.
Gymnocalycium “Rainbow”
G. mihanovichii “Rainbow”
Rare cultivar with lots of color variation, including reds and yellows, in the stems. Small flowering barrel to 4″d. Grows in dry savannah.
Gymnocalycium anisitsii
Small flowering barrel to 4″dia., pink flowers
Gymnocalycium anisitsii ssp. damsii
G. anisitsii v. rotundulum
Small flowering barrel to 4″dia.
Gymnocalycium baldianum
Clusters of small pink-flowering barrel to 4″dia.
Gymnocalycium bodenbenderianum
G. riojense
Small barrel cactus, to 6″ across, often flattened. Spines recurve tight to the stem. Stunning sepia-pink flowers.
Gymnocalycium bruchii
Freely growing clusters of 1-2″ stems. Pink flowers.
Gymnocalycium buenekeri
Will form clusters of 6″dia. stems. Pale pink flowers.
Gymnocalycium eurypleurum
Flattened globose to 5″ diameter. White flowers with a pinkish tint.
Gymnocalycium friedrichii
G. stenopleurum
G. mihanovichii friedrichii
Small flowering barrel to 4″d. Grows in dry savannah. Variable cream to pink flowers. Stem can show a lot of color variation depending on sun conditions and various cultivars.
Gymnocalycium horstii
Small flowering barrel, light pink flowers. Stems rotund 8-10″ in diameter. Green ball shape. Will form small clusters. Keep dry in winter.
Gymnocalycium neohuberi
G. curvispinum
Solitary stems to 3″, flattened globose. Lots of curved spines. Scented pink flowers, blooming size in a just a few years. Keep dry in winter.
Gymnocalycium ochoterenae ssp. vatteri
Flattened globose, 1-3 recurved spines per aureole.
Gymnocalycium platense
Flattened globose small barrel cactus with thick central spines. Cream-colored to light-yellow flowers with red throat.
Gymnocalycium ragonesei
Small pink-flowering black barrel; flattened globose
Gymnocalycium riojense ssp. piltziorum
From the Sierra Velasco. Sepia-tinged lilac-pink flowers. Small barrel cactus, to 4″ across, often flattened.
Gymnocalycium saglionis
One of the larger Gymno’s, will get 12″ across. Generally solitary. Pinkish-white flowers with reddish throats.
Gymnocalycium schickendantzii
4″, solitary, globose. White to reddish flowers.
Gymnocalycium stuckertii
Solitary barrels to 3″d.
Gymnocalycium tillianum
Curved spines, 6″ d. stems, red flowers.
Gymnocalycium uruguayense
Small clusters, globose to 6″, bright yellow flowers
Gyrocarpus jacquinii
Caudiciform trunk; Deciduous
Haageocereus pseudomelanostele
Clusters of upright stems with whitish to yellow spines, branches from the base. Blooms are pinkish or white.
Haemanthus albiflos
Evergreen bulb, 12″ long green strappy leaves. Winter-growing. White and yellow flowers. Protect from heavy rains.
Haemanthus pauculifolius
Evergreen bulb, single green strappy leaf. Winter-growing. White and yellow flowers in summer. Protect from heavy rains. Needs a cool season to bloom.
Hakea bucculenta
Evergreen Shrub
Large upright shrub with slender green leaves and red blooms winter through spring. Needs very good drainage. Do not fertilize, except trace minerals.
Hakea francisiana
Evergreen Shrub
Upright shrub with slender green leaves and pink-red blooms winter through spring. Needs very good drainage. Do not fertilize, except trace minerals.
Hakea laurina
Evergreen Shrub
Small tree with flat slender blue-green leaves. Pink and white pincushion flowers, blooming winter through spring. Needs very good drainage. Do not fertilize, except trace minerals.