Plant Min Zone: 9b
Plant Max Zone: 11b
Sunlight: Full Sun, Part Sun
Water / Rainfall: Low, Average
Soil Quality: Poor, Average
Bloom Season: Insignificant
Flower Color: Insignificant
Berry / Fruit Color: None
Spring Foliage Color: Chartreuse, Red, Pink
Summer Foliage Color: Chartreuse, Red, Pink
Fall Foliage Color: Chartreuse, Red, Pink
Evergreen Foliage: Yes
Winter Interest: Yes
Scented Flowers: No
Drought Tolerance: High
Wet-Feet Tolerance: Low
Humidity Tolerance: Medium
Wind Tolerance: High
Poor Soil Tolerance: Rocky Soils, Sandy Soils, Shallow Soils
Height: 2' - 5'
Width: 1' - 2'
Growth Rate: Medium
Service Life: N.A.
Maintenance Need: N.A.
Spreading Potential: N.A.
Yearly Trimming Tips: N.A.
Plant Grouping Size: N.A.
Best Side of House: N.A.
Extreme Planting Locations: N.A.
Ornamental Features: N.A.
Special Landscape Uses: N.A.
Possible Pest Problems: N.A.
Plant Limitations: N.A.
The Pencil Cactus (Euphorbia tirucalli) is a shrub with pencil-thick, green, smooth, succulent branches that provide photosynthesizes long after the foliage is shed. Usually grown as a patio or house plant in Kansas. Grow in full sun to full shade with optional extra watering including that which comes from rainfall. Plants with time to acclimate will thrive in full sun but be careful not to rush it or sunburning will occur. Generally if moving outside for the summer, allow 2-3 weeks of part shade or morning sun before placing in full sun. Repotting may or may not be needed depending on how large you want the plant to grow; plants can continue to grow taller and tolerate extremely root-bound pots but may need wind bracing. Potted plants are hardy to at least 25 degrees F for a short time if kept dry so you are ok if you miss the first light frost. Do not allow the pot with rootball to freeze solid though. Then move into a cold garage, basement, or bright window over the winter with occasional watering. As a winter house plant, it will look presentable all winter long with just a few waterings. As a permanent house plant, provide bright light and allow the soil to dry between waterings for many years of carefree enjoyment. Potted plants are very low maintenance needing very occasional pruning or topping. Stems are filled with a toxic milky sap which seems to flow out very vigorously even with only the tiniest injury. All members of the genus Euphorbia produce a milky sap called latex that is toxic and can range from a mild irritant to very poisonous. Firesticks Pencil Cactus (Euphorbia tirucalli 'Firesticks') is a highly ornamental variety that is more of a chartreuse color with bright orange and red tips developing in response to cold night temperatures.