Unicorn cactus - Eulychnia castanea &
Unicorn cactus - Eulychnia castanea &
Unicorn cactus - Eulychnia castanea &
Unicorn cactus - Eulychnia castanea &
Unicorn cactus - Eulychnia castanea &
Unicorn cactus - Eulychnia castanea &
Unicorn cactus - Eulychnia castanea &
Unicorn cactus - Eulychnia castanea &
Unicorn cactus - Eulychnia castanea &
Unicorn cactus - Eulychnia castanea &
Unicorn cactus - Eulychnia castanea &
Unicorn cactus - Eulychnia castanea &
Unicorn cactus - Eulychnia castanea &
Unicorn cactus - Eulychnia castanea &
Unicorn cactus - Eulychnia castanea &
Unicorn cactus - Eulychnia castanea &
Unicorn cactus - Eulychnia castanea &
Unicorn cactus - Eulychnia castanea &
Unicorn cactus - Eulychnia castanea &

Attention Gardeners, are you looking for a plant that will make your garden stand out? Look no further than the unicorn cactus, also known as Eulychnia castanea 'spiralis.'  The name Eulychnia is derived from two ancient Greek words: "eu," which means "good," and "lychnos," which means "lamp." Native to Chile, this unicorn cactus plant has several other common names as Varispiralis and unicorn horn cactus. 

Eulychnia castanea is a columnar cactus that can grow to be up to 16 feet tall and 8 inches in diameter. It has a distinctive spiral growth pattern (clockwise or counterclockwise) and produces small, white flowers that bloom in the summer.  This unicorn cactus has yellow spines with dark brown tips, that protect it from predators. It is a hardy plant that can tolerate a wide range of temperatures and soil conditions, making it a popular choice for xeriscaping and rock gardens in USDA 10-11. 

To care for the unicorn cactus, it is important to use specialized cactus potting soil and provide it with plenty of full sunlight to partial shade for at least 5-6 hours daily.  Watering should be done sparingly, especially during the winter months when it is dormant. Remember, overwatering can cause root rot, which can be fatal to the cactus. Fertilizer can be applied once during the growing season to promote healthy growth, but it is not necessary for the plant's survival.  

Propagation of the unicorn cactus can be done easily by taking stem cuttings or by growing it from seed. This unicorn cactus has no toxic effects on either humans or animals. Pets and children are safe to be around this cactus, so don't be concerned. 

This Eulychnia cactus is unlike anything you've seen before with its spiral stem. Imagine having this unique and eye-catching plant in your collection. Your garden will be the envy of all who see it! 

Bloom Season Summer
Botanical Name Eulychnia castanea 'spiralis'
Common Name Unicorn cactus, unicorn horn cactus
Dormancy -
Dormancy Winter
Family Cactaceae
Flower Color White
Genus Eulychnia
Growth Habit Spiral
Hardiness Zone 10, 11
Mature Size 16 ft. tall, 8 in. wide
Native Area Chile
Plant Type Perennial cactus
Propagation By stem cuttings, seeds
Resistance Drought tolerant, heat resistant, pest resistant, deer resistance
Soil PH 6.5, Acidic, Neutral
Soil Type specialized cactus potting soil
Special Features Unique foliage
Sun Exposure Full sun, partial shade
Toxicity Safe for humans, friendly to dogs, friendly to cats
Watering Needs Low

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Unicorn cactus - Eulychnia castanea 'spiralis'

sku: 1430

Regular price$ 36.75
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Shipping calculated at checkout.

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Please note: All Landscape Ready plants that are in a 6-inch pot or larger WILL NOT come with a pot as it will be shipped bare root.

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  • Inventory on the way

If you live in a cold climate and are expecting temperatures below 40 degrees within the next five days after placing your order, we highly recommend adding a heat pack to your order. If you do not order a heat pack, we do not send one with your order.

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**FREE HEAT PACK WITH ORDERS OVER $50 before taxes and shipping- BY REQUEST ONLY, PLEASE MAKE A NOTE ON YOUR ORDER.

To prevent plants from freezing while in transit, orders placed for areas with extreme severe freezing temperatures will be held for shipment until it is safe to ship.

Plants that are in 3.5" pots and smaller will be shipped in its pot to prevent any damage to the roots. Any plant that is 6" and larger WILL NOT come with a pot as it will be shipped bare root.

Depending on the species and season, you will receive a very similar plant to the one in the picture. It may or may not be blooming at the time of your purchase.

We ship via USPS Priority Mail, and we calculate the shipping cost based on the weight and volume of your purchase. Care instructions are included in every package you order. Please allow us up to 3 business days to process your order. Depending on your location, we will ship the plants on a certain day to avoid transit time during weekends or holidays. If you wish to receive your order on a specific date, or have special instructions, please add a note on your order. If you have any questions or comments, please feel free to contact us at any time.

  • Description
  • Features

Attention Gardeners, are you looking for a plant that will make your garden stand out? Look no further than the unicorn cactus, also known as Eulychnia castanea 'spiralis.'  The name Eulychnia is derived from two ancient Greek words: "eu," which means "good," and "lychnos," which means "lamp." Native to Chile, this unicorn cactus plant has several other common names as Varispiralis and unicorn horn cactus. 

Eulychnia castanea is a columnar cactus that can grow to be up to 16 feet tall and 8 inches in diameter. It has a distinctive spiral growth pattern (clockwise or counterclockwise) and produces small, white flowers that bloom in the summer.  This unicorn cactus has yellow spines with dark brown tips, that protect it from predators. It is a hardy plant that can tolerate a wide range of temperatures and soil conditions, making it a popular choice for xeriscaping and rock gardens in USDA 10-11. 

To care for the unicorn cactus, it is important to use specialized cactus potting soil and provide it with plenty of full sunlight to partial shade for at least 5-6 hours daily.  Watering should be done sparingly, especially during the winter months when it is dormant. Remember, overwatering can cause root rot, which can be fatal to the cactus. Fertilizer can be applied once during the growing season to promote healthy growth, but it is not necessary for the plant's survival.  

Propagation of the unicorn cactus can be done easily by taking stem cuttings or by growing it from seed. This unicorn cactus has no toxic effects on either humans or animals. Pets and children are safe to be around this cactus, so don't be concerned. 

This Eulychnia cactus is unlike anything you've seen before with its spiral stem. Imagine having this unique and eye-catching plant in your collection. Your garden will be the envy of all who see it! 

Bloom Season Summer
Botanical Name Eulychnia castanea 'spiralis'
Common Name Unicorn cactus, unicorn horn cactus
Dormancy -
Dormancy Winter
Family Cactaceae
Flower Color White
Genus Eulychnia
Growth Habit Spiral
Hardiness Zone 10, 11
Mature Size 16 ft. tall, 8 in. wide
Native Area Chile
Plant Type Perennial cactus
Propagation By stem cuttings, seeds
Resistance Drought tolerant, heat resistant, pest resistant, deer resistance
Soil PH 6.5, Acidic, Neutral
Soil Type specialized cactus potting soil
Special Features Unique foliage
Sun Exposure Full sun, partial shade
Toxicity Safe for humans, friendly to dogs, friendly to cats
Watering Needs Low

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