Poinsettias are a beloved holiday staple, but many homeowners toss these festive flowers once the season ends. Instead of throwing them away, why not keep them thriving all year? With some know-how and care, it’s possible to turn poinsettias into year-round houseplants that brighten up homes well beyond the winter months. We’ll walk you through the ins and outs of growing poinsettias year round, from basic care tips to the secrets of getting them to rebloom.
Poinsettia Basics: What You Need to Know
These tropical plants have unique characteristics that set them apart from other houseplants.
Plant Characteristics
In their natural habitat, poinsettias grow as perennial shrubs, reaching heights of up to 10 feet. The vibrant colors that make poinsettias so popular are actually leaf bracts, not flowers. The true flowers are small and found in the yellow center of the plant. Poinsettias come in a variety of colors, including the classic red, as well as pink, white, yellow, and even multicolored. These colors are a result of careful cultivation and selective breeding, creating an array of choices for different tastes and decor styles.
Debunking Myths
Contrary to popular belief, poinsettias are not poisonous. While they belong to the Euphorbia family and contain a milky sap that can cause mild irritation, they are generally non-toxic to humans and pets. However, it’s still wise to keep them out of reach of curious children and animals to avoid any potential stomach upset or skin irritation.
Finding the Right Poinsettias
Choose the poinsettia that will work best in your home. Here are some tips for finding healthy plants.
What to Look For
When shopping for poinsettias, look for bushy plants with colorful bracts that are fully opened but not covered in pollen. Pollen’s presence indicates that the plant is nearing the end of its blooming cycle. The plant should be about 2½ times the diameter of its pot, creating a good balance between foliage and container size. Healthy poinsettias will also have dark green leaves reaching down to the soil, which indicates good root health.
Bringing Your Poinsettia Home
Poinsettias are sensitive to cold, so protect them when taking them from the store to your home. Cover the plant completely when moving it to and from your car, especially in chilly weather. Once home, remove any decorative foil wrapping (or poke holes in it) to get good drainage, as poinsettias don’t like to sit in water. This will help the roots stay healthy and avoid rot, a common issue if the plant sits in water for extended periods.
Year-Round Care for Poinsettias
Keeping poinsettias healthy throughout the year requires paying attention to their specific needs.
Light Requirements
Poinsettias thrive in bright, indirect light. Place them near a sunny window where they can receive at least six hours of indirect sunlight daily. However, be cautious of intense afternoon sun, which can scorch the leaves. During the spring and summer months, move them outdoors to a partially shaded area. Natural light exposure during the warmer months can encourage growth and more vibrant bracts.
Watering Needs
Water the plant when the soil’s surface feels dry to the touch, but avoid overwatering, as this can lead to root rot. As mentioned, make sure that excess water can drain freely from the pot. During the growing season, water more frequently, but reduce watering in the fall and winter months.
Temperature and Humidity
Poinsettias prefer temperatures between 65°F and 70°F (18°C to 21°C). Avoid placing them near drafty windows or heat sources, which are stressful to the plant. They’re tropical, so they also appreciate higher humidity levels. To increase humidity, place the pot on a tray filled with pebbles and water. Don’t sit the bottom of the pot directly in the water. These practices encourage growth and contribute to your poinsettia’s longevity.
Fertilizing Schedule
During the active growing season (spring through fall), fertilize your poinsettia every two weeks with a balanced, water-soluble fertilizer. Reduce fertilization in late fall and winter when the plant’s growth naturally slows down. The right nutrients will lead to vibrant leaf growth and support the plant’s overall health.
Pruning and Repotting
Pruning and repotting help promote bushier growth and create enough space for the plant to thrive.
When and How to Prune
Prune your poinsettia in late winter or early spring to encourage new growth. Cut the stems back to about 4–6 inches above the soil line, leaving 1–3 leaves on each stem. This may seem drastic, but it will result in a fuller, yet more compact, plant. Throughout the growing season, pinch back the tips of new growth to promote branching. Doing so prepares the plant for a fuller display of its beautiful bracts during bloom time.
Repotting Guidelines
Repot your poinsettia in spring if it has outgrown its current container. Choose a pot that’s 1–2 inches larger in diameter than the current one, and use a well-draining potting mix designed for houseplants. After repotting, water thoroughly and place the plant in a bright, indirect light location. Having enough space allows the root system to expand, supporting a larger plant and healthier growth.
Getting Poinsettias to Rebloom
One of the most rewarding aspects of growing poinsettias year round is coaxing them to rebloom. This process requires some patience and attention to light exposure.
Importance of Darkness
Poinsettias are photoperiodic plants, meaning they rely on specific light conditions to trigger blooming. To encourage reblooming, they need a period of complete darkness each night for about 12–14 hours, starting in early October. The darkness simulates their natural shorter-day environments in the wild.
Creating the Right Environment
To achieve this, place your poinsettia in a dark closet or cover it with a light-proof box each evening, checking that no light reaches the plant. During the day, provide bright, indirect light as usual. Continue this regimen for 6–8 weeks until color begins to show on the bracts. This methodical routine will set the stage for a beautiful blooming phase.
Maintaining Care During Reblooming
While following the light/dark schedule, continue regular watering and reduce fertilization. Once color appears, you can resume normal care and enjoy your rebloomed poinsettia throughout the holiday season.
Troubleshooting Common Poinsettia Problems
Even with the best care, poinsettias can sometimes face challenges. Here are some common issues and how to address them.
Leaf Drop
If your poinsettia is losing leaves, it could be due to sudden temperature changes, drafts, or incorrect watering. Keep the plant in a stable environment away from cold windows or heat sources, and adjust your watering routine if needed.
Yellowing Leaves
Yellowing leaves often indicate overwatering or poor drainage. Check that your pot has drainage holes, and allow the soil to dry slightly between watering. If the problem persists, consider repotting with fresh, well-draining soil. Prevent waterlogged conditions to keep the roots healthy.
Pest Infestations
Poinsettias can sometimes fall victim to pests like whiteflies or spider mites. Regularly inspect your plant and treat any infestations quickly with insecticidal soap or neem oil, following the product instructions carefully.
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