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Thanksgiving Cactus


Botanical Name: Schlumbergera truncata

Thanksgiving Cactus is a member of the Cactaceae family. Schlumbergera truncata is the parent of many hybrid Schlumbergeras. In its native habitat, this rain forest cactus is epiphytic, making its home on trees.



Flat stem segments are long and narrow and connected by a mid-rib. Its deeply indented stems look like crab claws, giving it a second common name, Crab Cactus. In late fall, it bears big, beautiful flowers, which may be red, pink, peach, orange, white, or bicolored.

Blooming results from shorter, cooler days for 8-10 weeks. Putting your plant outdoors in early fall is ideal. Be sure it's in a shaded location. Bring it back inside before the first frost. Once buds set, don't move the plant around. Flower buds are likely to drop off if the plant is moved or suddenly exposed to temperature changes. If this happens, don't worry. It will bloom beautifully next year.


crab cactus, thanksgiving cactus

Origin: Brazil

Height: 12-24 in (30-60 cm)

Light: Bright indirect light

Water: Keep the soil evenly moist, but not soggy while plant is growing. After flowering, water sparingly until new growth begins in spring. Stems will shrivel or wilt if the roots are too dry.

Humidity: Moderate room humidity.

Temperature: To set flower buds, the plant needs cool 60-65°F/16-18°C days and 45-55°F/7-13°C nights. Once buds set, 70-75°F/21-24°C days and 60-70°F/16-21°C nights.

Soil: Mix 1 part potting soil and 1 part fine-grade fir bark.

Fertilizer: Feed every 2 weeks with a balanced liquid fertilizer diluted by half. After blooms have dropped, stop fertilizing for a month.

Propagation: Take stem segments in spring. Place upright in moist perlite.


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Green Thumb Tips:

Thanksgiving Cactus needs cool 45-55° nights for buds to develop.

It does best with moderate humidity. Check out these tips for raising the humidity for your house plants.

Many cultivars are available to choose from. The names are almost as tempting as their spectacular blooms. Here are just a few...

'Peach Parfait' and 'Twilight Tangerine' have peach and orange blossoms, respectively...

'Red Radiance' is dark crimson...'Majestic' is purple.

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