Thelocactus Species, Bird's-Nest Cactus

Thelocactus rinconensis

Family
Cactaceae (kak-TAY-see-ee)
Genus
Thelocactus (thel-oh-KAK-tus)
Synonym
Thelocactus multicephalus
Echinocactus rinconensis
Thelocactus rinconensis subsp. multicephalus
Thelocactus rinconensis var. rinconensis
Sun Exposure
Full Sun
Sun to Partial Shade
Light Shade
Height
under 6 in. (15 cm)
Spacing
3-6 in. (7-15 cm)
6-9 in. (15-22 cm)
Hardiness
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)
USDA Zone 11: above 4.5 °C (40 °F)
Danger
Plant has spines or sharp edges; use extreme caution when handling
Bloom Color
Pale Pink
Pale Yellow
White/Near White
Cream/Tan
Bloom Time
Late Winter/Early Spring
Mid Spring
Other Details
Category
Cactus and Succulents
Water Requirements
Drought-tolerant; suitable for xeriscaping
Average Water Needs; Water regularly; do not overwater
Foliage Color
Where to Grow
Can be grown as an annual
Bloom Characteristics
Bloom Size
Other details
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
From seed; winter sow in vented containers, coldframe or unheated greenhouse
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
Properly cleaned, seed can be successfully stored
Regional

This plant is said to grow outdoors in the following regions:

Phoenix, Arizona

Grenoble, Rhône-Alpes

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Gardener's Notes:

0
positive
1
neutral
0
negative
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Phoenix, AZ (Zone 9b) | March 2005 | neutral

The flowers range from white-cream to pale yellow to pale pink.

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