Taxonomy

Division:

Magnoliophyta | - Flowering plants

Family:

Cactaceae

Genus:

Opuntia

Species:

Opuntia macrorhiza

USDA Symbol:

OPMA2

Growth Characteristics

Life Cycle:

Perennial

Growth Habit:

Succulent

Height:

15 cm

Light Requirements:

Full Sun

Drought Tolerance:

High

Bloom Months:

may,jun,jul

Bloom Colors:

yellow

Ground Cover:

Yes

Wildlife Benefits

Bees:

★☆☆☆☆ Documented bee visitation (GBIF)

Caterpillars:

★☆☆☆☆ Recorded caterpillar host plant (HOSTS Database)

Keystone Species Ranking

Pollen Specialist Bee Keystone:

★☆☆☆☆ Native pollen specialist bee species supported by this genus (NWF)

Host Plant for Caterpillars

Garden & Ecology Notes

Wildlife Value:

birds, small mammals, bees

Deer Resistant:

Yes

Fire Ecology:

Fire adapted — tolerates or benefits from fire

Fire Notes:

Resprouts from underground tubers after fire; adapted to prairie fire regimes.

Soil Requirements

Soil Type:

sandy, well-drained, nutrient-poor soil

pH:

6.0 - 8.0 (neutral to slightly alkaline)

Drainage:

excellent drainage required

Moisture:

dry to moderate

Notes:

native to arid and semi-arid regions

Propagation & Germination

Stratification:

None required

Scarification:

Seed coat scarification required before sowing

Germination Time:

14–60 days

Notes:

Seeds have hard coats requiring scarification; germination is improved with warm temperatures around 70-85°F.

The above propagation data sourced from Claude AI