Prickly pear: growing indoors and in the garden, watering and propagation

Houseplant and hardy prickly pears: care through the year, planting in a dry bed, propagation from a pad and from seed, and safe work with glochids.

In short: The prickly pear (Opuntia) is a cactus with flat pads. Houseplant species want full sun, well-drained cactus compost, in summer watering after complete drying and in winter dryness at 5–10 °C. Hardy species such as Opuntia humifusa overwinter outdoors on a dry gravel bed. The tiny spiny glochids cause the most trouble.

Latin name	Opuntia, cactus family
Light	full sun, at least 6 h a day
Watering in summer	after complete drying, usually once every 10–14 days
Winter indoors	5–10 °C, almost dry
Frost outdoors	O. humifusa, O. fragilis, O. phaeacantha
Propagation	let a broken-off pad dry for 1–2 weeks, then plant

You recognise a prickly pear at first glance: the stem consists of flat oval pads that look as if they were stuck on top of each other. On the pads sit areoles with spines and, above all, with tufts of tiny hairs with barbs, called glochids. They are exactly the reason you work with a prickly pear in gloves.

Prickly pears are among the hardiest cacti of all. Some species even last through a Central European winter outdoors, others are grown on a windowsill and on a balcony in summer. Care is simple as long as you know which species you have at home.

Species of prickly pear: for the windowsill or the garden

Species	Habit	Frost hardiness	Where to grow
Opuntia humifusa	sprawling clumps up to 30 cm	very good, even below −25 °C when dry	rockery, gravel bed
Opuntia fragilis	small, easily breaking pads, up to 15 cm	very good	rockery, container outdoors
Opuntia phaeacantha	clumps up to 50 cm, prominent spines	good	dry south-facing slope, rockery
Opuntia ficus-indica	in a container 1–2 m, in the wild a tree	low, tolerates only a short light frost	flat, outdoors in summer, conservatory
Opuntia microdasys	small, spineless, densely covered with glochids	none	windowsill, beware of glochids

The labels in shops often say only "Opuntia sp.". If you do not know which species you have, grow it as a houseplant and do not test it against frost. Cactus care in general is covered in the article Succulents and cacti – a complete care guide.

Prickly pear at home: care through the year

Light

A prickly pear wants the brightest spot you have at home: a south- or west-facing window. In shade new pads stretch, are narrow and pale green, and the plant loses its shape. From the end of May to September it benefits most from being outdoors on a balcony. Accustom it to direct sun gradually over 1–2 weeks, though, or the pads will scorch.

Compost and container

Use cactus compost and mix in about a third of perlite or coarse sand. The container must have drainage holes and a drainage layer at the bottom, as described in the article Drainage in a flower pot. A clay pot is better than a plastic one; it dries faster and a tall prickly pear does not tip over in it so easily.

Watering

April–September: water generously until water runs out of the bottom, and water again only after the compost has dried completely. In summer that usually means once every 10–14 days, in heat on a balcony more often.
October: gradually reduce watering.
November–February: hardly water, only when the pads start to shrivel markedly.

Feeding

From April to August, once every 3–4 weeks, add a fertiliser for cacti to the water, for example Kapka for CACTI. A fertiliser with lower nitrogen content promotes firm pads and flowering. Do not feed in winter.

Overwintering and flowering

For a prickly pear to flower, it needs a cool, dry winter: a bright spot at 5–10 °C, for example a hallway, a staircase or an unheated room. In a warm living room it also overwinters, but usually does not flower and stretches. Houseplant prickly pears flower only as older plants, often after 5 or more years.

Hardy prickly pear in the garden

Hardy prickly pears are killed not by frost but by winter wet. In a dry, well-drained spot they survive even hard frosts; in heavy wet soil they rot in a single winter.

Place: full sun, ideally a south-facing slope, a rockery or a raised bed by a south-facing wall.
Soil: dig the bed 30–40 cm deep and fill it with a mix of gravel, coarse sand and a little soil. Water must drain away immediately after rain.
Planting: in spring, April to May, so that the plant roots before winter. Cover the root crown with gravel, not bark mulch.
Watering: only the first weeks after planting, then nothing.
Winter: do not cover it with anything. In autumn the pads shrivel, turn red and lie down towards the ground. It is a defensive reaction, and in spring they fill out and rise again. In very rainy regions a transparent little roof over the plant helps.

How to prepare a well-drained position is described in the article Building a rockery.

Propagation and repotting

From a pad

The easiest way to propagate a prickly pear:

From spring to summer break or cut off a whole pad at the joint.
Leave it lying for 1–2 weeks in a dry, shady place until the cut surface dries and hardens.
Insert its lower third into dry cactus compost, or prop it against a small stake.
First watering only after 2–3 weeks, when it starts to form roots.

From seed

Prickly pear seeds have a hard coat and germinate slowly and unevenly, from several weeks to months. It helps to soak them for 24 hours before sowing or to scarify them lightly with sandpaper. Sow in spring in well-drained seed compost with sand, hardly cover them and keep them at 20–25 °C under a lid, for example in a mini propagator with ventilation. A general procedure for sowing cacti is in the article A cactus from seed to flowers.

Repotting

Repot young plants every 2 years in spring, older ones only when the container is no longer enough. Hold the plant through folded newspaper, a piece of polystyrene or kitchen tongs. After repotting do not water for a week so the injured roots do not rot.

Glochids: how to avoid them and how to get them out of the skin

Glochids are tiny barbed hairs that come loose at a touch and stick into the skin. They are almost invisible and itch for a long time. All prickly pears have them, even the "spineless" O. microdasys, and so do the fruits.

Work in thick leather or rubber gloves; ordinary fabric ones let glochids through.
Do not put a prickly pear where children or animals brush against it.
Remove glochids from the skin with sticky tape pressed on and pulled off, or with tweezers. Do not scratch or rub the spot, or the glochids break off deeper.
If they get into the eye, do not rub it and seek a doctor.

The fruits of the Indian fig opuntia (O. ficus-indica), sold as prickly pears, are edible, but they too have glochids. Peel them with a knife and fork, never with a bare hand. A cosmetic oil is pressed from prickly pear seeds and used externally on the skin.

The most common problems

Symptom	Cause	Solution
soft, brown pads at the base	rot from overwatering or winter wet	cut off healthy pads, let them dry and root again
narrow, pale, stretched new pads	too little light, a warm winter	south-facing window, summer outdoors, cool winter
shrivelled pads in winter	normal winter state	do not water, they fill out in spring
white tufts like cotton wool	woolly aphid or mealybug	wipe off with a brush dipped in alcohol, isolate
yellow-brown spots after being put outside	sunburn	acclimatise gradually over 1–2 weeks

Frequently asked questions

How often should I water a prickly pear?

In summer after the compost has dried completely, usually once every 10–14 days. In winter at 5–10 °C hardly at all, only when the pads shrivel markedly.

Does a prickly pear tolerate frost?

Some species do, for example Opuntia humifusa, O. fragilis or O. phaeacantha, if they grow in a dry, well-drained spot. Opuntia ficus-indica and most houseplant prickly pears do not survive frost.

How do I propagate a prickly pear?

Break off a whole pad, let it dry for 1–2 weeks and insert it in dry cactus compost. First watering only after 2–3 weeks.

Why is my prickly pear not flowering?

Most often it has a warm winter and too little light. It needs a cool, dry winter at 5–10 °C and full sun in summer. Young plants flower only after several years.

How do I remove glochids from the skin?

Press sticky tape on the spot and pull it off, and pull out the rest with tweezers. Do not rub or scratch, or the glochids would break off deeper.

Are prickly pear fruits edible?

The fruits of the Indian fig opuntia (O. ficus-indica) are, and are sold as prickly pears. They have glochids, though, so they are peeled with a knife and fork, not with a bare hand.

Sources

Updated: 27 September 2026

Author: Jana Vránová, the editorial name of the Pěstík.cz team. She writes about the garden, herbs and essential oils. We take safety and dosage data from specialist literature and official sources, which we cite in every article.