Poinsettia, a large full potted plant covered in bright red bracts on a shaded patio

Poinsettia

Euphorbia pulcherrima
Categories:
Tropicals  ·  
Tropicals
Light
Partial shade
Water
Water thoroughly when the top inch of potting mix feels dry, then drain completely. Do not leave water in saucers or decorative foil sleeves. Avoid prolonged drying and wilting.
Size
1-3 ft tall and wide (10-in pot); 6-10 ft if planted out in a frost-free microclimate
Habit
Upright shrub – multi-stemmed
Toxicity
Toxic if Ingested; Sap Irritant
Description
Poinsettia (Euphorbia pulcherrima) is a tropical shrub prized for colorful winter bracts surrounding tiny flowers. ‘XL 10 in’ generally denotes a large plant sold in a 10-inch nursery pot, not a specific cultivar.
Bloom Time
Winter
Deciduous / Evergreen
Semi-evergreen
Special Features
Showy Flowers
Growth Rate
Moderate to fast
Growth Habit
Upright shrub – multi-stemmed
Mature Size
1-3 ft tall and wide (10-in pot); 6-10 ft if planted out in a frost-free microclimate
Flower Color
Red / pink / white / or bicolor bracts
Foliage Color
Dark green
Landscape Use
Container / Patio, Indoor / Houseplant
Garden Style
Container / Patio, Shade / Indoor, Tropical
Soil
Well-Drained
Companion Plants
Christmas cactus, Indirectly lit indoor displays, Moth orchid, Parlor palm
Toxic if Ingested; Sap Irritant
Mildly toxic if ingested (GI upset); milky sap irritates skin and eyes
Care Instructions

Light: Bright, indirect light indoors. Outdoors in Phoenix, provide filtered shade or gentle morning sun; protect from intense afternoon sun and reflected heat.

Water: Water thoroughly when the top inch of potting mix feels dry, then drain completely. Do not leave water in saucers or decorative foil sleeves. Avoid prolonged drying and wilting.

Soil: Well-drained, peat- or coir-based potting mix with perlite. Use a container with drainage holes.

Mature size: Commonly maintained at 1–3 feet tall and wide in containers. Unpruned shrubs can reach 6–10 feet tall and similarly wide in frost-free climates; Phoenix frost and summer heat limit outdoor performance.

Bloom: Typically late fall through winter. For repeat winter color, provide approximately 14 hours of uninterrupted darkness nightly for 8–10 weeks beginning in fall, with bright light during the day.

Evergreen / deciduous: Broadleaf evergreen in warm, stable conditions; may shed leaves during dormancy or in response to cold, drought, or other stress.

Growth rate: Moderate to fast during warm growing conditions.