Prickly pear

Growing in Pots, Balconies & Indoors

Prickly pear (Opuntia) is a pad cactus that reaches 2-6 m (6-18 ft). The grower does not class it as a houseplant, but it grows well in a pot, which keeps it in check. It wants full sun; a young plant can sit on a very sunny windowsill before it wants a big tub outdoors. The pads carry spines and fine barbed glochids, so keep it away from children and pets.

Quick Details

• Container Size: Start 20-50% wider than the plant and pot up into a large, heavy tub
• Indoor Suitability: Not a houseplant; only a very sunny window suits a young plant
• Best Spot: Full sun – the sunniest sill while young, then a sunny patio or balcony
• Soil & Drainage: Free-draining cactus/succulent mix over a gravel or lava-rock base; strong drainage holes
• Watering in Pots: Water sparingly and let the mix dry out between waterings; cut back further in the cool dormant season – pots must never stay wet

Indoors & On the Windowsill

• Not a houseplant: The grower does not recommend it indoors – it needs full sun and grows large.
• Windowsill growing: A young plant is fine on the sunniest sill for a time, but it will soon want a balcony or patio.
• Safety: Spines and glochids irritate skin – keep it away from children and pets.
• Overwintering: Frost-tender types need a bright, frost-free winter spot kept nearly dry.

On a Balcony or Patio

• Light & wind: Full sun on a sheltered balcony; use a heavy, stable tub as it grows and site it away from paths and seating.
• Bring it in for winter: Move frost-tender plants under cover before frost.

Choosing the Pot, Soil & Long-Term Care

• Pot & drainage: Use a pot only 20-50% larger than the plant – it need not be deep, since the roots run shallow. Add a layer of gravel, lava rock or pebbles in the base, give it strong drainage holes, and never leave it standing in water.
• Potting mix: A free-draining cactus and succulent mix – gritty and well aerated so it dries quickly.
• Feeding: Potted cacti need only light feeding, as nutrients leach out with each watering; a dilute low-nitrogen cactus feed through the warm growing season is enough.
• Repotting: Every few years, once the roots fill the pot or the mix has broken down, refresh the soil and move up one size.

Bloom & Edible Flower Guide

Quick Details

• Bloom Season: Spring
• Flower Appearance: Large, waxy, cup-shaped flowers in orange, yellow or pink
• Edibility: Edible — prickly-pear petals are edible (used fresh or dried in teas); always brush off the tiny glochid spines first

Detailed Blooming Overview

In spring the prickly pear opens big, silky, cup-shaped flowers in warm oranges, yellows and pinks along the edges of its pads. They are a magnet for bees, butterflies and hummingbirds, and the flowers themselves are edible — the petals are used fresh or dried for tea, once the plant’s tiny barbed glochids are carefully removed.

Flower Characteristics

• Large, waxy, cup-shaped flowers in orange, yellow or pink.
• Borne along the rims of the pads.
• Rich in nectar and very attractive to pollinators.

Bloom Care & Thinning

• Encouraging bloom: Full sun and a dry winter rest bring on the best flowering.
• Pollination: The flowers are worked by bees, butterflies and hummingbirds.
• Handling: Take care with the fine glochid spines whenever you touch the plant or harvest petals.