Hatiora gaertneri
| Light | Bright, indirect light; protect from harsh direct sun |
|---|---|
| Water | Regular in growth; keep lightly moist, never soggy; ease off after flowering |
| Soil | Open, humus-rich epiphyte mix that drains freely (see Soil and potting mix) |
| Temperature | Cool-growing; keep above freezing, dislikes prolonged heat |
| Propagation | Stem-segment cuttings (primary); also seed |
| Toxicity | Non-toxic to cats and dogs |
Hatiora gaertneri, the Easter cactus, is a spring-blooming epiphytic cactus from the coastal forests of southeastern Brazil, grown for the star-shaped scarlet flowers it produces at the tips of its flattened, leaf-like stem segments. It has been shuffled between several genera over the years and is now often placed in Rhipsalidopsis, so you will also see it sold as Rhipsalidopsis gaertneri or, older still, Schlumbergera gaertneri. Along with the closely related Christmas and Thanksgiving cacti, it is one of the classic "holiday cacti" of the windowsill.
Description
Hatiora gaertneri is a much-branched epiphyte whose stems are built from a chain of flattened, segmented pads (cladodes). Each segment is oblong with gently scalloped or rounded margins — noticeably smoother and less toothed than the sharply clawed segments of a Schlumbergera. Young growth is upright, arching over into a spreading, pendent habit with age, which makes the plant a natural for a hanging pot.
The flowers are the main event. They open in spring from areoles at the segment tips, funnel- to star-shaped and typically a vivid scarlet to orange-red, with pointed, radiating petals that give the whole bloom a starry outline. Unlike the strongly asymmetric, tubular flowers of Christmas cactus, Easter cactus flowers are more regular and open wider. A well-grown plant can carry a striking flush of colour across its whole canopy.
Distribution and habitat
The species is native to southeastern Brazil, where it grows as an epiphyte (and sometimes a lithophyte) in humid, shaded Atlantic forest, perched on tree branches or mossy rocks. In that habitat it experiences steady moisture, good air movement, dappled light rather than full sun, and relatively cool, stable temperatures — conditions that translate directly into how it likes to be grown indoors.
Cultivation
Easter cactus is a little fussier than its Christmas-blooming cousins, but not difficult once its preferences are met. Grow it in an open, humus-rich epiphyte mix that holds a touch of moisture yet drains freely, and give it bright, indirect light — protection from strong direct sun keeps the segments from bleaching or scorching. It appreciates cooler conditions and good humidity, and tends to sulk in hot, dry rooms.
During active growth keep the mix lightly and evenly moist, watering when the surface has begun to dry; never let it stand wet. Ease back on water for a rest after flowering. Cool nights and a slightly drier, cooler spell through winter help set the spring flower buds. Once buds have formed, avoid moving or rotating the plant and keep conditions steady — sudden changes in light, temperature or watering are the usual reason buds drop. See Watering and Repotting for general technique; repot only every few years, ideally just after flowering.
Propagation
The easy and reliable method is stem-segment cuttings. Twist or snip off a length of two or three segments, let the cut end callus for a day or so, then set it in a lightly moist, open mix; it roots readily in warmth. This is how named clones are kept true. The species can also be raised from seed, though this is slower and mainly of interest to hybridisers. See Propagation — cuttings for the full walkthrough.
Cultivars
Easter cactus has been selected and hybridised for flower colour, giving named forms in shades from the wild scarlet through orange, pink, salmon and white. Much of the modern colour range comes from crosses within Rhipsalidopsis. When shopping, plants are often labelled simply by flower colour rather than by a formal cultivar name.
Common problems
- Bud drop — the classic complaint; usually triggered by moving the plant, draughts, or swings in temperature and watering once buds have set. Keep everything steady.
- Rot — from a mix that stays waterlogged, or watering too heavily in the cool rest period; stems soften and blacken at the base.
- Shrivelled, limp segments — often underwatering or roots damaged by earlier overwatering; check the roots and adjust.
- Pests — mealybugs (white fluff in the joints and areoles) and scale are the most common; see Pests and diseases.
See also
- Hatiora — the genus overview
- Schlumbergera — the related Christmas and Thanksgiving cacti
- Soil and potting mix · Watering · Repotting · Propagation — cuttings · Pests and diseases