Fuzzy cacti that suit Arizona gardens include golden barrel, teddy bear cholla, bunny ears and lady finger, all of which need full sun and sharp drainage. A few, like old man cactus, need frost protection in the East Valley.
Key takeaways
- Plant from March through April or September through October, and avoid June through August.
- Mix coarse pumice or decomposed granite into native soil, or plant on a low mound, so water never sits around the base.
- Established cacti in the ground usually need water every 2 to 3 weeks in the hottest months (less when monsoon rain falls) and about once a month or less in winter.
- Old man cactus, silver torch, powder puff and bunny ears can be damaged by frost, so cover them or grow them in pots when nights are forecast near freezing.
- Cholla and bunny ears carry glochids that detach on contact, so keep them away from paths and play areas.
What makes a cactus look fuzzy, and which kinds hurt?
Fuzzy cacti get their look from long hair-like spines, tightly packed short spines, or clusters of tiny barbed bristles called glochids. Glochids cause the most trouble because they detach on contact and lodge in skin, and they are hard to see once they are in.
Old man cactus wears long white hair over stiff spines. Golden barrel has no hair at all, and its glow comes from stout golden spines packed so closely they read as fur. Wear thick leather gloves and use folded newspaper or tongs when you move any of them. Soft-looking does not mean soft.
Which fuzzy cacti grow best in Arizona gardens?
The eight below cover a range of sizes and hardiness. They are varieties we commonly carry in our plant department, though availability changes week to week and season to season. Sizes are typical ranges, and they depend on age, soil and how much water the plant gets. Each one has a drawback, and you should know it before you buy.
1. Golden barrel (Echinocactus grusonii)
This round, golden-spined cactus reaches about 2 to 3 feet tall and wide over many years. It wants full sun and tolerates reflected heat from walls better than most cacti. Once established it needs water about every 2 to 3 weeks in summer. The drawback is its stout spines, which make planting and weeding around it painful, and it rots quickly in soil that stays wet.
2. Old man cactus (Cephalocereus senilis)
A slow columnar cactus draped in white hair, it can pass 10 feet after decades in the ground, though potted plants stay much smaller. Give it bright sun with some afternoon shade in summer, and water about every 2 to 3 weeks in warm months. The drawback is frost. It can be damaged by freezing nights, so many East Valley gardeners grow it in a pot that can be moved or covered.
3. Teddy bear cholla (Cylindropuntia bigelovii)
This Sonoran Desert native grows 3 to 5 feet tall and looks golden and furry in low light. It needs full sun and little water once established. The drawback is serious. Its joints break off and cling to skin, clothing and pet fur, so plant it well away from walkways, gates and anywhere a dog runs.
4. Bunny ears (Opuntia microdasys)
Flat pads dotted with tufts of tiny glochids make this one of the softest-looking cacti, and it grows 2 to 3 feet tall and often wider. It likes full sun, with some afternoon shade in the hottest months, and water every 2 to 3 weeks in summer. The drawback is the glochids, which are nearly invisible once they lodge in skin. Pads can also scar in a hard frost.
5. Lady finger cactus (Mammillaria elongata)
Clusters of slim stems reach about 6 to 8 inches tall, covered in dense golden or white spines. Bright light with some afternoon shade suits it, and it blooms with small pale flowers in late winter to spring. Water about every 2 to 3 weeks in warm months and much less in winter. The drawback is size, since it gets lost among larger plants, and it rots fast in heavy soil.
6. Powder puff cactus (Mammillaria bocasana)
Small round stems with silky white hair form a low clump, usually 4 to 6 inches tall. Morning sun and afternoon shade keep it from scorching. Water lightly every 2 to 3 weeks in warm months. The drawback is the hooked spines hidden under the hair, which grab skin and cloth. It also needs protection from frost and from wet winter soil.
7. Silver torch cactus (Cleistocactus strausii)
Slender silver-white columns grow in clumps to roughly 3 to 6 feet tall, with narrow red flowers in warm weather. Full sun with a little afternoon shade works well, and summer watering every 2 to 3 weeks is enough once established. The drawback is that tall stems can lean or flop, and frost can mark them in cold pockets of a yard.
8. Fishhook barrel (Ferocactus wislizeni)
A Sonoran Desert native, it grows about 2 to 4 feet tall and wears red to yellow spines that look fuzzy from a distance. It takes full sun and very little water once established. The drawback is that it is not soft-looking up close. The hooked central spines are sharp, so it suits the back of a bed more than the edge of a path.
When should I plant fuzzy cacti in the East Valley?
March through April and September through October are the best planting windows for fuzzy cacti in Queen Creek and the surrounding East Valley. Soil is warm enough to encourage roots, and the plant has time to settle before summer highs above 110°F or winter cold. Our gardening calendars help you plan around these windows.
Summer planting is possible but riskier. A cactus grown in partial shade can scorch within days when moved into full sun, so cover it with 30 to 50 percent shade cloth for the first several weeks. During the monsoon, from roughly July through September, a freshly planted cactus in heavy soil can rot after a single storm.
How do I plant fuzzy cacti in caliche and alkaline soil?
Plant them high in a coarse, fast-draining mix, and break through any caliche layer so water can leave the hole. Dig the hole about twice as wide as the root ball and no deeper than the root ball. Alkaline native soil is fine for most of these cacti. Drainage is the real concern.
Test it before you plant. Fill the hole with water, let it drain, then fill it again, and if water is still standing after several hours, build a low mound or choose a pot. Blend coarse pumice or decomposed granite into the native soil, skip compost and peat, and set the plant at the same depth it grew in its container. Give it one good soak, then wait about two weeks before the next watering.
Can I grow fuzzy cacti in containers?
Yes, and containers are the easiest way to grow the frost-tender kinds and to avoid caliche altogether. Lady finger, powder puff and young old man cactus all do well in pots. Unglazed terracotta breathes and does not hold heat like black plastic, and you can browse shapes in our pottery and planters.
Choose a pot only a couple of inches wider than the plant, with a drainage hole, and use a gritty cactus mix with extra pumice. Lift the pot on feet so water escapes. In June through August, move pots out of reflected afternoon heat, since roots in a small pot can overheat long before the plant shows stress. Move tender ones under cover when a freeze is forecast.
How should I use fuzzy cacti in the landscape?
Use them as texture accents against plain walls, gravel or darker foliage, and group them in odd numbers. A cluster of three golden barrels reads as a deliberate design. A tall silver torch looks best against a dark wall, where its silver spines stand out.
Pair soft-looking cacti with plants of a different shape, such as an agave rosette or a spiky yucca. Place cholla and bunny ears at the back of a bed, behind a boulder or fence line. Smaller Mammillarias belong at eye level in pots or in gaps between rocks, where you can enjoy them without brushing against them.
What problems do fuzzy cacti get, and what fixes them?
Rot, sunburn, frost damage and scale insects are the main problems, and rot is by far the most common. Soft, dark tissue at the base, often with a bad smell, means water has been sitting around the roots. A plant with rot through the growing tip usually cannot be saved.
Sunburn shows as pale, papery or tan patches on the side facing the afternoon sun. It does not spread like a disease, so shade the plant and let it recover. Frost damage looks like mushy, grayish tissue a few days after a freeze, and you should leave it alone until spring so the damaged part can protect what is underneath. Cottony white patches in the spines usually mean mealybugs, which are easy to miss in hair. Bring a photo or a sample to us, or sign up for one of our classes and events, before you treat anything.
Frequently asked questions
How do I handle a spiny cactus when planting?
Use thick leather gloves and a sling made from folded newspaper, a towel or foam pipe insulation wrapped around the stem. Lift from the base of the pot rather than the plant. Keep long sleeves on, and carry a comb or tape to lift stray glochids from your clothes before you touch your skin.
How fast do fuzzy cacti grow in Arizona?
Most grow slowly, often only an inch or two a year in height or width. Golden barrel and old man cactus are especially slow. Cholla and bunny ears grow faster, since they add new joints or pads each warm season. Expect a small plant to look the same size for several years, and buy the size you want today.
Do fuzzy cacti bloom in Arizona?
Yes, most do, but timing varies. Mammillarias such as lady finger bloom in late winter through spring, bunny ears and cholla bloom in spring, and silver torch and barrels flower in warm weather. Young plants may take several years to bloom, and golden barrel in particular is slow to flower. Bright sun and dry winters help.
Do I need to fertilize fuzzy cacti?
No, most grow well without fertilizer, and too much can cause soft, weak growth. If you want to feed, use a cactus fertilizer once in spring at half the label rate. Never feed a plant that is stressed, rotting or dormant. Good drainage and the right sun matter far more than fertilizer.
Can I move a cactus after it is planted?
You can, but do it in spring or fall, and mark which side faces south before you dig. Turn the same side toward the sun when you replant, or the stem can scorch. Keep as many roots as possible, let any cuts dry for a few days, and water sparingly afterward.
Are fuzzy cacti right for your yard?
Fuzzy cacti suit a sunny, well-drained spot where you want texture with almost no care. Choose golden barrel, fishhook barrel or cholla for in-ground beds and the small Mammillarias for pots. They are a poor fit for a yard with small children or pets that roam near the planting, or for a spot where water pools after rain. Stop by our nursery in Queen Creek and we will help you match a plant to your site.
