How to Grow Claret Cup Cactus
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Claret Cup Cactus
Echinocereus scopulorum
shrubEchinocereus scopulorum is a low-growing, clustering barrel cactus native to the southwestern United States and northern Mexico. It produces stunning crimson to orange tubular flowers in spring and early summer, followed by small round fruits. This drought-tolerant plant is popular in xeriscaping and rock gardens.
When should you plant Claret Cup Cactus in your zone?
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Example Claret Cup Cactus timeline · Pittsburgh, PA (Zone 6b)
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Plant Claret Cup Cactus
Around Apr 17Near Pittsburgh's average last spring frost.
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Tend & protect
Late spring–summerWatering, feeding, and pest-watch reminders.
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Harvest Claret Cup Cactus
Late summer into fallBefore the first fall frost (≈ Nov 8)
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Growing Conditions
Soil
Growing Zones
Find your zone →Thrives in USDA zones 9b-11, hardy to around 15°F (-9°C) with protection
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Get my Claret Cup Cactus timeline →Growth Stages
Seedling
3-6 monthsTiny round green cacti with minimal spines, barely visible to 1/2 inch tall
Keep under bright light, provide minimal water, ensure excellent drainage with cactus-specific soil mix. Avoid overwatering which causes damping-off.
Juvenile
1-2 yearsSmall globular or slightly cylindrical plants with prominent spines developing, 1-3 inches tall
Maintain bright light, water only when soil is completely dry, protect from extreme cold. Begin minimal fertilizing in growing season.
Vegetative/Mature
6-12 months before first bloomClustering mounds 6-12 inches tall with well-developed spination and increasing girth, no flowers yet
Provide full sun, ensure sharp drainage, water sparingly during growing season (spring-summer), fertilize lightly monthly with diluted cactus fertilizer. Maintain temperature above 50°F.
Flowering
3-6 weeks (typically April-June)Dense clusters of brilliant crimson, orange-red, or scarlet tubular flowers 1-1.5 inches long blooming from the upper sides of stems
Provide maximum sunlight to enhance color. Ensure plant had cool, dry winter rest period (below 50°F for 2-3 months) which triggers flowering. Do not disturb flowers; they attract hummingbirds.
Fruiting/Post-Bloom
4-8 weeksSmall round red or orange fruits develop where flowers bloomed, seeds mature inside fruits
Reduce watering as temperatures rise in summer. Protect from extreme heat (above 95°F) with afternoon shade in hottest climates. Allow fruits to dry on plant.
Companion Planting
Plan your garden →Plant with:
Avoid planting near:
Common Pests
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Spray with neem oil or insecticidal soap; use rubbing alcohol on cotton swab for small infestations. Improve air circulation.
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Remove manually with soft brush; spray with horticultural oil. Repeat treatment every 10-14 days.
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Increase humidity with misting; spray with neem oil or miticide if severe. These prefer dry conditions, so water stress increases susceptibility.
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Ensure excellent drainage and avoid overwatering. Remove infected plant, repot in fresh, dry cactus soil. Discard contaminated soil.
Uses
Desert Garden Display
OrnamentalPrized for striking crimson-red flowers that attract hummingbirds and butterflies, making it a focal point in xeriscapes, rock gardens, and container arrangements. Its compact clustering habit creates natural mounding effects. [source]
Pollinator Habitat
WildlifeThe abundant spring flowers provide early-season nectar for hummingbirds, native bees, and butterflies. The fruits are consumed by wildlife including birds and small mammals. [source]
Low-Maintenance Landscaping
HouseholdExtremely drought-tolerant once established, requires minimal watering, fertilizing, or pruning. Ideal for water-wise gardens, xeriscaping, and low-maintenance landscape designs in arid and semi-arid regions. [source]
Container & Specimen Growing
CraftPerfect for terra cotta pots, hypertufa containers, and rock troughs. Can be grown indoors on sunny windowsills or in greenhouse collections. Popular in bonsai-style cactus arrangements. [source]
Harvest Tips
Echinocereus scopulorum is grown ornamentally for its flowers rather than harvested. Allow fruits to fully mature and dry on the plant if collecting seeds. Seeds can be harvested from ripe fruits in mid-to-late summer and stored dry in cool conditions for years.
Fun Facts
- 🌱 Echinocereus scopulorum is native to rocky slopes and canyon walls in Arizona and Sonora, Mexico, where it blooms in coordinated masses creating spectacular displays visible from great distances.
- 🌱 The common name 'Claret Cup' refers to the wine-colored flowers; hummingbirds can see the red flowers from up to a mile away and will travel significant distances to feed on them.
- 🌱 This species is noted for its extreme hardiness among Echinocereus; some cultivated plants have survived temperatures to 5°F (-15°C) with snow cover, making it one of the coldest-hardy red-flowering cacti available to gardeners.
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