Horrible Houseplants to Grow for Halloween

These plants aren't really horrible. They're just twisted, contorted, prickly and fun to grow for spooky decorations.

Crested Euphorbia

Crested Euphorbia

Crested Euphorbia is grafted, which makes it a kind of Frankenstein plant for Halloween.

Photo by: Costa Farms

Costa Farms

Crested Euphorbia is grafted, which makes it a kind of Frankenstein plant for Halloween.

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Some houseplants are weird and otherworldly, with strange shapes and creepy names that make them perfect—and perfectly fun—to grow for Halloween. Don’t be afraid to try them just because there’s a little boo in these beauties.

Crested Euphorbia

Are you going for an alien theme? You need a (Euphorbia lactea). This grafted plant looks menacing with its spiky, cactus rootstalk and twisted, red-rimmed comb. It doesn’t need much water. A drink every couple of weeks will do, but it does like a warm room and plenty of light. Use a mulch of pebbles around the base and display it with other creepy cacti and sinister succulents. 

Celosia 'Dracula'

Celosia Dracula

Celosia Dracula

Move your celosia houseplants outside in spring, after all chance of frost has passed.

Photo by: National Garden Bureau/PanAmerican Seed

National Garden Bureau/PanAmerican Seed

Move your celosia houseplants outside in spring, after all chance of frost has passed.

Celosias come in several colors, but you need a dark red variety like to really spook things up. Typically grown as garden annuals, celosias bloom until frost, but you can pot them as temporary houseplants or use the cut, dried blooms for arrangements. ‘Dracula’ is a novelty celosia that produces one big flower on the top of each plant. When grown outdoors, the foliage, which starts out green and red, becomes more purple. The flowers turn dark purple, too. Unlike the real Drac, celosias love sun. 

Alocasia poly

Alocasia Polly

Alocasia Polly

Unusual Alocasia poly has big, shield-shaped leaves.

Photo by: Costa Farms

Costa Farms

Unusual Alocasia poly has big, shield-shaped leaves.

Also known as African mask or elephant's ear, has big, dark leaves with what we’ll call "dead-white" veins, around Halloween. This exotic tropical needs bright light and the kind of high humidity found in kitchens and bathrooms. Show it off as a specimen or group it with other foliage plants. Then weave some fake spider webs through the leaves, dim the lights, play a tape of creepy, chattering insect sounds, and turn your party room into a menacing jungle. 

Senecio vitalis ‘Serpents’

Serpents Senecio vitalis

Serpents Senecio vitalis

You may find this plant called blue chalk sticks or blue chalk fingers.

Photo by: ProvenWinners.com

ProvenWinners.com

You may find this plant called blue chalk sticks or blue chalk fingers.

is often grown as a garden annual. It’s hardy in USDA zones 10-11, but can be grown as a low-maintenance houseplant, too. This succulent tolerates heat, likes part sun to sun and needs watering about once a week in warm weather. In the winter, water it only enough to prevent wilting. The fleshy, blue-green leaves give the plant its common name, blue chalk fingers. Grow it for Halloween, and conjure up images of ghostly fingers reaching for the sky. 

Venus Flytrap

Scatter pots of Venus flytraps around, and wait. Someone is bound to say, “Feed me, Seymour,” when the plant’s “teeth” snap shut. Your guests are safe, but Venus flytraps will trap and digest ants and other small insects. Use this carnivorous beauty in a terrarium or give it high humidity, good air circulation and moist soil. The plant will catch its own dinner when grown outside, but you’ll have to feed it indoors. That means giving it live flies or other insects, since dead ones won’t simulate the traps to open. Nasty? Yes. That's why this is a good choice for Halloween.

Pitcher Plant

Pitcher Plant

Pitcher Plant

In nature, pitcher plants find their own food. Grown as houseplants--you'll have to serve live insects.

Photo by: Atlanta Botanical Garden

Atlanta Botanical Garden

In nature, pitcher plants find their own food. Grown as houseplants--you'll have to serve live insects.

Pitcher plants are also carnivorous oddities that lure and feed on mites, ants, spiders and other insects. Sarracenia leucophyllair isn't easy to grow indoors, but you can buy a potted plant to enjoy for a short time. Keep it moist with rainwater or distilled water (tap water can harm its sensitive roots). Follow the care directions on the label to enjoy the pitcher plant’s haunting looks for Halloween. 

Earth Star

Earth Star Plant

Earth Star Plant

Cryptanthus come in many patterns and colors, including black, dark green, red and pink.

Photo by: Costa Farms

Costa Farms

Cryptanthus come in many patterns and colors, including black, dark green, red and pink.

, or Cryptanthus, is an eye-catching bromeliad you can grow in a terrarium. Up the eerie factor with spooky props like tiny headstones, or let the kids add miniature aliens and action figures for that “came-from-outer-space” look. Let the plant’s soil dry out before you water again, and keep it in plenty of light in a warm room. Don’t let the terrarium sit in full sun to avoid burning the leaves. 

Agaves

Variegated Agave

Variegated Agave

Decorate a tablescape with agaves with arching and spiny leaves.

Photo by: Costa Farms

Costa Farms

come in many colors and fascinating shapes. Thread agave has stiff leaves covered with thin, white, web-like fibers. Others have arching leaves that look like the legs of squids or octopi, or sharp spines along their margins. No matter how they look, most agaves are easy to care for, grow slowly and thrive in warm temperatures and bright light.

Pedilanthus

Pedilanthus

Pedilanthus

Tie on a few gauzy ghosts and dangling spiders to decorate this plant's branches.

Photo by: Costa Farms

Costa Farms

Tie on a few gauzy ghosts and dangling spiders to decorate this plant's branches.

Some gardeners see a spinal column in the zig-zag arrangement of leaves, which explains why it’s commonly called the devil’s backbone. Grown indoors, the plant reaches about 2’ tall. It tolerates low light and dry conditions, so put it in a corner for Halloween, and use a lantern nearby to cast twisted shadows on the wall. Be careful not to cut the stems of this devilish beauty, as they’ll ooze poisonous sap. 

Spider Plant

Although it’s the season for tricks and treats. there’s no trick to growing undemanding spider plants. They’re happy with bright to moderate light and the temperature and humidity in the average home. Their arching stems bear lots of baby “spiders” that dangle over the edge of pots and baskets. They’re almost too cute to be spooky, unless you’re a gardener who just can’t stand the idea of spiders in the house. 

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hgPG-2454208-spider-plant-pup

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