Costa Farms


Passionate about plants? So are we! Costa Farms is a wholesale grower that discovers, develops, and grows plants for your home and life -- indoors and out. We’re your online gardening resource for plant info and inspiration. Our articles, blogs, tips, and photos help you use plants to beautify your living spaces and enhance your life.

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Cactus Plant Features

Looking for a plant you don't have to water much? A cactus might be your answer! Most cacti come from dryland areas and are used to being able to survive weeks without rainfall. Cactus houseplants have that same characteristic: Just give cacti a bright, sunny spot and you can enjoy the easy-care houseplants without a lot of tending.

There's a wide variety of cacti to grow; they offer a plethora of shapes, colors, and sizes so you can find one that suits your personality and decor style. If they get enough light, many will bloom, producing cheery flowers in white, pink, red, orange, yellow, or purple. Some of the more common groups of cacti include Cereus, Echinocactus, Espostoa, Ferocactus, Mammillaria, Notocactus, Opuntia, Parodia, Pilosocereus, and Rebutia.  

Make the most of your cactus houseplants by planting them in containers that accent the plants' rich colors, shapes, or textures. And by grouping several different cacti together in a windowsill or tabletop, you can create a mini desert escape! In addition to being good houseplants, most cacti are also good plants for offices as they don't need natural light. Lots of artificial light is just fine! 

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Cactus Growing Instructions

The best place for most cactus houseplants is a warm, bright spot. These sun-lovers do best when they get lots of direct light. 

Wondering how much to water cacti? In general, you can water most types once every two or three weeks or so. If in doubt, it's usually best to water too little; cacti can rot if they stay too moist.

Most cactus houseplants are slow growers and don't really need much fertilizer. Just a couple of times per year will do. But if you want to fertilize your cactus regularly, do so in spring and summer with a general-purpose fertilizer formulated for use on houseplants. Follow the directions on the packaging. 

Because they're slow growers, you typically don't have to worry about pruning cacti.

Note: Many cacti are prickly to the touch and are not intended for human or animal consumption. 

Get tips for planting cacti (and succulents)!
Discover 10 water-wise plants anyone can grow. 

Special Care

Outdoors, grow cacti in containers on a sunny deck, patio, or balcony. They thrive in heat and require containers that have drainage holes. 

If cacti are hardy for your landscape, choose a well-drained spot, such as the top of a sunny slope or a rock garden. Don't plant cacti where they'll stay wet for extended periods. 

  • Light

    Indoors: High light
    Outside: Sun

  • Colors

    Blue, Green, Orange, Pink, Purple, Red, Silver, Variegated, White, Yellow

  • Water

    Low water needs

  • Special Features

    Super-easy to grow

Complement your Cactus with these varieties:
Crested Euphorbia
Crested euphorbia makes for an elegant accent to most types of cactus.

Rosary Vine
Easy-to-grow rosary vine likes similar conditions to houseplant cactus varieties and trails from baskets of cacti.

Most succulents look and grow fantastically well with cactus.

Varieties: Our Favorites

Parodia magnifica Balloon Cactus

Parodia magnifica

A cactus must be cool if its botanical name contains magnifica! Balloon cactus doesn't disappoint; this globe-shaped plant has parallel rows of spines running down its sides, giving it fun architecture. It also has yellow flowers. It may grow as much as 12 inches tall (30 cm) in time.

Ferocactus glaucescens Blue Barrel Cactus

Ferocactus glaucescens

Blue barrel cactus is a silvery-blue cactus decorated with golden-yellow spines. When happy, it produces light yellow flowers in spring or summer. Over time, it can grow 24 inches (60 cm) tall and wide. You may also see it called Echinocactus glaucescens.

Euphorbia lactea compacta Candelabra Cactus

Euphorbia lactea compacta

While it looks like a cactus, candelabra cactus is actually more closely related to poinsettias! It has upright, variegated stems and creates a dramatic look. In time, it can grow 60 inches (150 cm) tall or more.

Opuntia subulata monstrose Christmas Tree Cactus

Opuntia subulata monstrose

Christmas tree cactus is an unusual, upright-growing variety that has thick, branched pads that almost give it a Christmas-tree look. Over time, it can grow 24 inches (60 cm) tall. Note: It's also called Austrocylindropuntia subulata.

Cleistocactus icosagonus Cleistocactus

Cleistocactus icosagonus

Cleistocactus is a lovely variety covered in golden spines that practically glow in the sun. It grows tall and upright and has orange-red flowers when it's happy. It can reach 24 inches (60 cm) tall.

Mammillaria elongata ‘Copper King’ Copper King Ladyfinger Cactus

Mammillaria elongata ‘Copper King’

This attractive variety of ladyfinger cactus is green but features contrasting coppery-red spines in clusters. It blooms with small white flowers in high-light spots. Copper King ladyfinger cactus usually grows about 4 to 6 inches tall.

Rebutia marsoneri Crown Cactus

Rebutia marsoneri

Crown cactus is slow growing and forms tidy mounds about as wide as it is tall (to 6 inches or 15 cm). Over time, it forms offshoots and grows into a cluster. It produces large, orange-red flowers in spring. Note: It's also sometimes called Rebutia krainziana.

Opuntia rufida 'Desert Gem' Desert Gem Cactus

Opuntia rufida 'Desert Gem'

This type of prickly pear cactus has cute little pads decorated with bursts of little spines and orange flowers. It usually stays about 12 inches tall or less.

Eriosyce senilis Eriosyce

Eriosyce senilis

Eriosyce is a fun cactus with twisting, hair-like spines and pink flowers. It can grow 8 inches tall. Note: This cactus is sometimes also called Neoporteria nidus.

Acanthocereus tetragonus 'Fairy Castle' Fairy Castle Cactus

Acanthocereus tetragonus 'Fairy Castle'

This small, slow-growing variety has dark green stems studded with white spines. In time, and in ideal growing conditions, it can reach about 36 inches tall.

Mammillaria plumosa Feather Cactus

Mammillaria plumosa

Feather cactus stands apart because it’s practically covered in white, feathery spines, giving it a soft, almost cloud-like look. In strong light, it blooms with small, fragrant white flowers. For best results, when watering keep moisture off of the spines. It grows about 4 inches tall.

Parodia leninghausii Golden Ball Cactus

Parodia leninghausii

Also called Notocactus leninghausii, this easy-to-grow cactus features an upright shape and golden-yellow spines. It can reach 24 inches tall or more. In spring or summer, it produces yellow flowers. Zones 10-11

Echinocactus grusonii Golden Barrel Cactus

Echinocactus grusonii

One of the most recognizable cacti, this slow grower has a round shape and is decorated by stiff, golden-yellow spines. It can grow more than 36 inches tall and wide in time.

Mammillaria muehlenpfordtii Golden Pincushion Cactus

Mammillaria muehlenpfordtii

A slow-growing round plant, golden pincushion cactus has attractive golden-yellow spines. It typically grows about 6 inches tall and wide. Note: You may also see it called Mammillaria celsiana.

Various species Grafted Cactus

Various species

Looking for a colorful cactus? Try grafted varieties. These are actually two different plants fused together. Grafted cacti come in a range of different colors and sizes.

Mammillaria elongata Ladyfinger Cactus

Mammillaria elongata

Ladyfinger cactus has finger-like stems covered in pretty, golden-yellow, star-shaped spines. When it blooms, it has little creamy-white flowers. It usually grows 4 to 6 inches tall.

Parodia mammulosa Lemon Ball Cactus

Parodia mammulosa

Lemon ball cactus (also called Notocactus mammulosa) is a small and easy-to-grow species that usually gets about 4 inches tall and is covered in needle-like spines. When it blooms it produces yellowish flowers.

Mammillaria elongata ‘Lemon’ Lemon Ladyfinger Cactus

Mammillaria elongata ‘Lemon’

Lemon ladyfinger cactus offers dainty stems decorated by clusters of lemon-yellow spines. In bloom, it produces small, creamy-white flowers. It commonly grows 4 to 6 inches tall with time.

Mammillaria heyderi Little Nipple Cactus

Mammillaria heyderi

Little nipple cactus is native to the American Southwest and creates a low mound to 6 inches (15 cm) tall. It bears white, cream, or yellow flowers in summer when grown in high light.

Mammillaria backebergiana albispina Mammillaria backebergiana albispina

Mammillaria backebergiana albispina

Native to Mexico, this slow-growing variety features white spines that give it an airy look. When grown in bright light, it shows off reddish-purple flowers. It can eventually grow 12 inches tall.

Mammillaria backebergiana ernestii Mammillaria backebergiana ernestii

Mammillaria backebergiana ernestii

A dark green cactus with spines in small clusters, it’s easy to grow indoors in a bright spot. It blooms with small, reddish-purple blooms. It can reach 12 inches tall. Note: It’s also sold as Mammillaria ernestii.

Mammillaria boolii Mammillaria boolii

Mammillaria boolii

Native to Mexico, Mammillaria boolii is a slow-growing cactus covered in white spines, almost making it look like it’s encased in shimmery cobwebs. It produces large pink flowers in bright light.

Mammillaria fraileana Mammillaria fraileana

Mammillaria fraileana

Mammillaria fraileana is a slow-growing cactus that eventually forms a colony of plants covered in small brown spines. It typically grows to about 6 inches (15 cm) tall and bears soft pink flowers.

Mammillaria guelzowiana Mammillaria guelzowiana

Mammillaria guelzowiana

Mammillaria guelzowiana is a fun globe-shaped cactus that's covered in spines and blooms with attractive, fragrant bright pink flowers.

Mammillaria matudae Mammillaria matudae

Mammillaria matudae

Also called Mammillaria compacticaulis, this slow-growing cactus from Mexico that’s dark green with golden-yellow spines. As it matures, it takes on an upright form and produces a small colony of offsets. The flowers are bright pink.

Mammillaria mystax Mammillaria mystax

Mammillaria mystax

Mammillaria mystax is a common, and charming, globe-shaped cactus that blooms with small pink flowers.

Mammillaria rekoi leptacantha Mammillaria rekoi leptacantha

Mammillaria rekoi leptacantha

Easy to cultivate and slow growing, Mammillaria rekoi leptacantha gets about 6 inches (15 cm) tall and has spines in clusters. It blooms with pinkish-purple flowers.

Opuntia 'Maverick' Maverick Cactus

Opuntia 'Maverick'

Maverick is a showy variety that offers variegated pads. It's a slow-growing cactus that can eventually reach a couple of feet tall.

Lemaireocereus marginatus Mexican Fencepost Cactus

Lemaireocereus marginatus

Tall and beautiful, Mexican fencepost cactus gets its name from its vertical growth. The dark green stems are decorated with silvery spines running down the side of the plant in straight lines.

Mammillaria compressa Mother of Hundreds Cactus

Mammillaria compressa

Called mother of hundreds because it forms large clumps (up to 3 feet wide when grown outdoors in a frost-free place), it’s also a fine houseplant. In good light, it produces reddish-pink flowers in winter.

Espostoa melanostele Old Man Cactus

Espostoa melanostele

Old man cactus is a tall variety that looks like it's covered in soft white hair. When it blooms, it has orchid-like white flowers.

Espostoa lanata Old Man of Peru Cactus

Espostoa lanata

Old man of Peru cactus earned its name from its long spines that look like the plant has a bushy white beard. It's an upright grower that has red flowers.

Oreocereus trollii Old Man of the Mountain Cactus

Oreocereus trollii

Old man of the mountain cactus earned its common name because its upright growing stems appear to be wrapped in flowing white hair.

Opuntia microdasys var. rufida Opuntia microdasys var. rufida

Opuntia microdasys var. rufida

Opuntia microdasys var. rufida is a type of prickly pear cactus that has flat pads studded with spines and yellow flowers.

Mammillaria parkinsonii Owl-Eye Cactus

Mammillaria parkinsonii

Owl-eye cactus is a charming mounding variety that has white spines, densely clustered at the top of the plant, and creamy-yellow flowers.

Parodia aureispina Parodia aureispina

Parodia aureispina

Parodia aureispina is a small, rounded variety that has small white and large, yellow hook-shaped spines with yellow flowers.

Parodia haselbergii subs. graessneri Parodia haselbergii subs. graessneri

Parodia haselbergii subs. graessneri

Parodia haselbergii subs. graessneri, also called Notocactus graessneri flaviflorus, is a relatively fast-growing cactus that features yellowish spines and green flowers in spring. It can grow to 6 inches tall.

Parodia nivosa Parodia nivosa

Parodia nivosa

Parodia nivosa is a small cactus with long white spines and bright red-orange flowers.

Pilocereus repandus Pilocereus repandus

Pilocereus repandus

Pilocereus repandus is a tall, upright cactus that grows to tree-like proportions outdoors in the tropics. It has white flowers and showy red fruit.

Pilosocereus lanuginosus Pilosocereus lanuginosus

Pilosocereus lanuginosus

Tall and upright, Pilosocereus lanuginosus has creamy flowers and abundant coppery-yellow spines. Zones 10-11

Mammilaria pringlei Pincushion Cactus

Mammilaria pringlei

Pincushion cactus is an excellent houseplant that has a mounding shape, golden-yellow spines, and pink flowers.

Mammillaria longimamma Pineapple Cactus

Mammillaria longimamma

Pineapple cactus is a low-growing variety that has branching stems topped by star-shaped spines. It has creamy-yellow flowers.

Mammillaria bocasana Powderpuff Cactus

Mammillaria bocasana

Powderpuff cactus earned its common name because of the silky hairs that surround its spines. It can bear yellow or pink flowers in spring or summer if it gets enough light.

Mammillaria rhodantha Rainbow Pincushion Cactus

Mammillaria rhodantha

Rainbow pincushion cactus is an easy-to-grow species that slowly reaches 6 to 12 inches tall (15 to 30 cm) and 4 inches (10 cm) wide. It features clusters of curved spines and pinkish flowers from spring to fall in high-light spots.

Euphorbia trigona Red Red African Milk Tree

Euphorbia trigona Red

You wouldn't guess red African milk tree is actually related to poinsettias! This succulent has upright stems flushed with red and silver. Zone 10

Parodia mairanana Red Tom Thumb Cactus

Parodia mairanana

Red Tom Thumb cactus is a small cactus that usually grows wider than tall. The dark green body bears star-like clusters of small spines. When happy, it produces orange or red flowers in spring and summer.

Echinopsis huascha Red Torch Cactus

Echinopsis huascha

Red torch cactus is an attractive, upright species that features a green body accented by star-like clusters of spines. Over time and in optimal good conditions, it can reach 5 feet tall (1.6 m).

Mammillaria spinosissima Red-Headed Irishman Cactus

Mammillaria spinosissima

Red-headed Irishman cactus earned its name because the new spines at the top of the plant are a rich, coppery-red color. As they mature, the spines fade to silvery white. This globe-shaped cactus has pink flowers.

Mammillaria zeilmanniana Rosy Pincushion Cactus

Mammillaria zeilmanniana

Rosy pincushion cactus earned its common name for its attractive pink flowers that can appear on and off throughout the year. It grows about 5 inches (12 cm) tall and 3 inches (8 cm) wide.

Parodia erubescens Schlosser Cactus

Parodia erubescens

Schlosser cactus is a spherical variety that has showy coppery-spines and lemon-yellow flowers. It can grow 8 inches tall and 6 inches wide. Note: This cactus is also called Notocactus schlosseri.

Mammillaria karwinskiana nejapensis Silver Arrow Cactus

Mammillaria karwinskiana nejapensis

Silver arrow cactus is a slow-growing, dark green cactus that bears long, silvery-white spines and small, silvery-white hairs. It has white flowers.

Notocactus scopa Silver Ball Cactus

Notocactus scopa

A globe-shaped species, Notocactus scopa has yellow-orange spines and ivory-yellow flowers. It can eventually reach 20 inches tall. Note: It's also sometimes called Parodia scopa.

Mammillaria columbiana rubra South American Pincushion Cactus

Mammillaria columbiana rubra

South American pincushion cactus typically grows taller than it is wide, and has coppery-red spines in clusters. In high light, it produces small pink flowers.

Mammillaria duoformis Tenango de Valle Tenango de Valle Cactus

Mammillaria duoformis Tenango de Valle

Tenango de Valle cactus is a slow-growing variety that produces clusters of creamy-yellow spines accented by hooked, reddish-purple spines. It grows 4 inches (10 cm) tall.

Melocactus matanzanus Turk's Cap Cactus

Melocactus matanzanus

Turk's cap cactus is a small, slow grower that's topped by coppery-colored spines and pink flowers. Native to areas of Cuba, it's endangered in the wild. It grows 4 inches (9 cm) tall and wide.

Mammillaria geminispina Twin-Spine Cactus

Mammillaria geminispina

Twin-spine cactus is a rounded, mounding variety that has silvery-white spines and cute pink flowers. It can grow about 8 inches (18 cm) tall over time.

Mammillaria nivosa Woolly Nipple Cactus

Mammillaria nivosa

A charming Caribbean plant that eventually forms fun clusters of offsets, woolly nipple cactus shows off clusters of golden-yellow or bronze spines and fuzzy-white hairs. It bears small yellowish-green flowers. It can grow 6 inches (15 cm) wide.