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PlantFiles: Blue Barrel, Eagle's Claw
Echinocactus horizonthalonius

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Family: Cactaceae (kak-TAY-see-ee) (Info)
Genus: Echinocactus (ek-in-oh-KAK-tus) (Info)
Species: horizonthalonius

Synonym:Meyerocactus horizonthalonius

One vendor has this plant for sale.

Category:
Cactus and Succulents

Height:
under 6 in. (15 cm)
6-12 in. (15-30 cm)
12-18 in. (30-45 cm)
18-24 in. (45-60 cm)

Spacing:
9-12 in. (22-30 cm)
12-15 in. (30-38 cm)
15-18 in. (38-45 cm)

Hardiness:
USDA Zone 8b: to -9.4 C (15 F)
USDA Zone 9a: to -6.6 C (20 F)
USDA Zone 9b: to -3.8 C (25 F)
USDA Zone 10a: to -1.1 C (30 F)
USDA Zone 10b: to 1.7 C (35 F)

Sun Exposure:
Full Sun
Sun to Partial Shade

Danger:
Plant has spines or sharp edges; use extreme caution when handling

Bloom Color:
Pink
Magenta (Pink-Purple)

Bloom Time:
Mid Spring
Late Spring/Early Summer

Foliage:
Unknown - Tell us

Other details:
Drought-tolerant; suitable for xeriscaping
Average Water Needs; Water regularly; do not overwater
Suitable for growing in containers

Soil pH requirements:
6.1 to 6.5 (mildly acidic)
6.6 to 7.5 (neutral)
7.6 to 7.8 (mildly alkaline)

Patent Information:
Non-patented

Propagation Methods:
By dividing rhizomes, tubers, corms or bulbs (including offsets)
From woody stem cuttings
Allow cut surface to callous over before planting
From seed; direct sow after last frost

Seed Collecting:
Allow unblemished fruit to ripen; clean and dry seeds
Unblemished fruit must be significantly overripe before harvesting seed; clean and dry seeds

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By palmbob
Thumbnail #1 of Echinocactus horizonthalonius by palmbob

By palmbob
Thumbnail #2 of Echinocactus horizonthalonius by palmbob

By Xenomorf
Thumbnail #3 of Echinocactus horizonthalonius by Xenomorf

By palmbob
Thumbnail #4 of Echinocactus horizonthalonius by palmbob

By Xenomorf
Thumbnail #5 of Echinocactus horizonthalonius by Xenomorf

By Xenomorf
Thumbnail #6 of Echinocactus horizonthalonius by Xenomorf

By Xenomorf
Thumbnail #7 of Echinocactus horizonthalonius by Xenomorf

There are a total of 12 photos.
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Profile:

No positives
3 neutrals
No negatives

Gardeners' Notes:

RatingAuthorContent
Neutral palmbob On Jul 3, 2006, palmbob from Acton, CA (Zone 8b) wrote:

I aquired one of these a few years ago, sort of expecting a larger plant (mail order).. got this sphere smaller than a ping pong ball, and it has barely grown since, though no problems so far. Saw some more for sale recently and all about the same dinky size. Wasn't even sure this plant got much bigger than a ping pong ball until I saw one in a show recently. Looks nothing like most of the other Echinocactus sp.. Still, a curious plant with an odd colored skin. Not sure how it grows in Arizona where it's hotter, but it is quite slow here in So California.

Neutral Xenomorf On Aug 26, 2005, Xenomorf from Valley of the Sun, AZ (Zone 9b) wrote:

Other common names this plant goes by are; Devil's Head Cactus; Mancacaballo; Mancamula; Melon Cactus; Viznaga Meloncillo.

Neutral smiln32 On Nov 9, 2004, smiln32 from Oklahoma City, OK (Zone 7a) wrote:

The main part of this plant is a chalky blue color. Flower color varies from pink to rose red and can be up to 3" in diameter. Fruit is oblong and reddish-brown when ripe. Areoles can be full of white wool when young.

Regional...

This plant has been said to grow in the following regions:

Green Valley, Arizona
Phoenix, Arizona
Bostonia, California
Reseda, California



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