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B and T World Seeds' reference number:
The average, annual, minimum temperature zone where Echinocactus platyacanthus is cold hardy
USDA Zone:9 20° to 30°F (-6.5° to -1°C)
|Type of plant - perennial
Flower or inflorescence:
YELLOW, outer BROWN apic., to 6x8cm.
to ~ 8x2.5cm., elong.-clavate..pulp edible(germ. 2-12 weeks, best with GA-3)
barrel bod. to 1.2m. dia., narrow BLUE-GREEN ribs, stout spines
|Echinocactus platyacanthus sales history
Synonyms (alternative names) for Echinocactus platyacanthus:
|Echinocactus ingens, Echinocactus palmeri,|
Common names for Echinocactus platyacanthus:
|Blue Barrel, IOS 00395, Mexican Giant Barrel,|
is included in the following
B and T World Seeds flowering plant categories.
|5||: Cactus Seed List|
|See also *Succulent Plant Seed List|
|30||: Exotic and Other Fruit and Nut Tree and Shrub List|
|43||: Herbaceous Border Plant Seed List|
|85||: Natives of U.S.South West (Arizona Texas New Mexico)|
|720||: Fire Resistant Plants|
|Different classes of resistance: some grow back, some don't burn, a few have highly inflammable leaves that leave the rest of the plant intact, some trees don't have lower branches.|
Some knowledge about growing from seed is necessary to germinate even the easiest seeds.
Most seeds require humidity to germinate, even desert plants like
require that their growing medium remains moist until germination.|
Most seeds require oxygen to germinate, if buried too deep in their growing medium, or if the medium is too wet,
the seeds may not get the oxygen they require.
Echinocactus platyacanthus seeds will usually germinate in 5-180 days, even under good conditions germination may be erratic.
Sand, and loam, with some sphagnum moss or coir (coconut fiber/dust) make a good mix for germinating Echinocactus platyacanthus and similar seeds. The mix needs to be free-draining, and to be slightly water retentive. Surface sow the seeds and just cover with sand. Start germinating the seeds in shady (dark), humid conditions. As the seeds start to germinate, increase the light and decrease the humidity.