15 Outdoor Plants That Grow in December

If you’re looking for plants that thrive in December, I’ve found a mix of hardy options. Kale, spinach, and carrots are excellent winter vegetables, tolerating frost and even enhancing sweetness post-freeze. For green interest, consider evergreen shrubs like Red Twig Dogwood and Boxwood, which offer vibrant stems and lush foliage. Hellebores, often called “Christmas roses,” bloom in late November and can handle the chill. Snowdrops and Coral Bells also flourish in cooler temperatures. Each of these plants brings resilience and beauty to your landscape. There’s more to uncover about suitable varieties and care tips to keep them thriving.

Red Twig Dogwood

vibrant red stemmed shrub

The Red Twig Dogwood is an impressive shrub that not only thrives in December but also offers year-round visual interest. Grown in hardiness zones 3-8, it reaches heights of 6-12 feet and spreads 8-12 feet wide, adding at least 2 feet annually. For optimal dogwood care, I recommend planting it in moist, well-draining soil with an acidic pH of 5.5 to 6.5. This shrub tolerates various conditions, including full sun to partial shade and even slow-draining soil. Its stunning red stems provide vibrant winter color, while spring flowers attract pollinators. Fast-growing annual selective pruning keeps the red twig looking its best, and removing older stems encourages robust new growth. Overall, it’s a resilient and valuable addition to any landscape.

Boxwood

boxwood plant characteristics

While many plants struggle during the colder months, boxwood shrubs stand out as resilient and versatile options for December gardening. These evergreens thrive in U.S. hardiness zones 5 to 9, with some boxwood varieties even tolerating zone 4. I recommend planting them in early spring or late fall, ensuring they receive 4 to 6 hours of daily sunlight, preferably in locations shielded from harsh winds and direct afternoon sun. For optimal boxwood care, amend the soil to be more acidic, and remember to water regularly during the first year. Additionally, proper drainage is essential to prevent root rot and ensure healthy growth. Mulching annually aids in moisture retention, while spring fertilization promotes healthy growth. Prune in early spring to enhance airflow and protect young shrubs from winter damage with burlap or anti-desiccants.

Inkberry Holly

evergreen red berries shrub

In December, Inkberry Holly stands out as a reliable choice for gardeners seeking evergreen shrubs that can withstand cold conditions. This evergreen shrub, with its spineless, finely toothed leaves, typically grows 5-8 feet tall and spreads 8-10 feet wide. I appreciate its adaptability, thriving in full sun to full shade while preferring moist, well-drained, acidic soils. The inkberry benefits include being deer-resistant and attracting pollinators like bees and birds. For optimal inkberry care, I recommend pruning in early spring to maintain shape and stimulate growth. If you want to control its spread, remove root suckers regularly. Additionally, female plants produce black fruits that persist through winter, providing sustenance for wildlife and enhancing the landscape’s appeal. The flowers of the inkberry are known to provide nectar for bees, contributing to the production of Gallberry honey.

Arborvitae

evergreen tree species

After exploring the benefits of Inkberry Holly, let’s focus on another hardy evergreen: Arborvitae. These trees require attentive winter care to thrive. Before the ground freezes, I ensure the soil remains moist by providing about one inch of water, either from rain or manual watering. If I notice warm weather mid-winter, I water again. To protect young, multi-stemmed arborvitae from heavy snow, I wrap jute string around them for support. For fertilization techniques, I apply granular fertilizers at a rate of 2 lbs per 100 square feet, or use liquid fertilizers mixed with water three to four times yearly. Additionally, I spray with Wilt Stop to prevent winter burn, ensuring the spray dries properly before freezing. Monitoring soil moisture levels throughout the winter is crucial to prevent dehydration and mitigate the risk of winter burn.

Kale

nutrient rich leafy green

Kale is one of the most resilient crops you can grow during the winter months, thriving in conditions that would challenge many other plants. I’ve found that it grows best in full sun, with fertile, well-draining soil enriched with compost. The optimal pH is between 6.5 and 6.8. Some kale varieties, like Winterbor and Darkibor, can survive temperatures as low as -10°F. Cold-tolerant varieties can provide a continuous harvest throughout winter, ensuring fresh greens are always available. I recommend using row covers for added protection against harsh weather. During winter harvesting, the leaves become sweeter after frost exposure. I usually harvest the oldest leaves first, stimulating new growth. This allows me to enjoy fresh kale throughout the winter, while also freezing some for later use. It’s truly a winter gardening staple!

Cauliflower

versatile and nutritious vegetable

Cauliflower stands out as a rewarding winter crop that thrives in cooler temperatures, making it an excellent choice for gardeners looking to extend their growing season. To grow cauliflower successfully, I start seeds indoors 4 to 6 weeks before the last frost, then transplant them outdoors 2 to 4 weeks prior. I ensure they receive full sun and well-drained, fertile soil with a pH between 6 and 7. With various cauliflower varieties available, I pay close attention to pest management, using insect-proof mesh and brassica collars to protect young plants from pests like slugs and cabbage root fly. Regular watering and nitrogen-based fertilization keep my plants healthy, enabling harvests of smooth, firm heads in 50 to 80 days, depending on the variety. Ideal growth temperature for cauliflower is between 60-65°F, which allows for optimal development during the winter months.

Carrots

crunchy orange root vegetable

When it comes to winter gardening, carrots are a fantastic option that thrives in cooler weather. For successful winter planting, I suggest sowing carrot varieties about 12 weeks before your first frost date. In regions with longer growing seasons, you can start as early as mid-summer, but aim for early August at the latest. Loose, fertile soil is essential, ideally with a pH between 6.0 and 6.8. To protect your crop, use mulch, straw, or leaves against harsh frosts. Interestingly, carrots become sweeter after frost exposure, as cold converts starches to sugars. Cold-hardy carrots can survive temperatures as low as -10°F when protected, making them resilient during winter. I often leave them in the ground, harvesting as needed throughout winter, making them a reliable source of fresh produce during the colder months.

Spinach

nutrient rich leafy vegetable

After enjoying the sweet crunch of freshly harvested carrots, I often turn my attention to another winter favorite: spinach. Spinach thrives in cool temperatures, ideally between 45 and 75°F, and can even tolerate light frost. I prefer planting spinach varieties like ‘New Zealand’ or ‘Winter Bloomsdale’ in late summer for a winter harvest. The benefits of spinach are impressive; it’s packed with vitamins A, C, and K, along with iron and calcium. I make sure to plant in well-drained, loamy soil enriched with composted manure. A thick blanket of garden compost improves soil fertility for spinach growth, ensuring strong plants. To protect my plants, I use row covers during cold snaps and ensure they get at least 3-4 hours of sunlight daily. This way, I can enjoy fresh spinach throughout the winter months.

Garlic

flavorful aromatic cooking ingredient

Pansies

colorful springtime garden flowers

Garlic isn’t the only plant that can thrive in cooler months; winter pansies are another fantastic option for adding color to your outdoor spaces in December. For optimal winter pansy care, plant them in fertile, well-draining soil, ideally between 45°F and 65°F. Late summer to mid-autumn is the best time for planting, spacing bush varieties 15cm apart and trailing varieties 20-25cm apart. Remember to keep the soil moist during dry spells, watering it directly to prevent fungal issues. Feeding with liquid fertilizer every few weeks will boost growth. To protect your pansies from harsher winters, consider using mulch and ensure they’re well-established before the cold sets in. Follow these pansy planting tips for vibrant blooms all winter long!

Hellebores

beautiful winter blooming flowers

Hellebores, often referred to as “Christmas roses,” are a remarkable choice for winter gardens, offering blooms from late November through spring. These hardy plants, thriving in USDA Zones 4 or 5, withstand freezing temperatures, ensuring longevity in your garden. When it comes to Hellebore care, I recommend planting in rich, moist, well-draining soil, ideally in partial shade. Planting in groups of three to five enhances their visual impact. Regularly shear back old foliage in late winter and apply compost annually to boost growth. As you explore different Hellebore varieties, note that some have unique outward-facing blooms, while others feature downward-facing flowers. Just remember, they contain toxins, so keep them away from pets and small children.

Snowdrops

delicate winter flowers bloom

Snowdrops, with their delicate white blossoms peeking through winter’s frost, are a stunning addition to any garden. For successful planting techniques, I recommend placing them in clusters of 25 or more, ideally in fall when temperatures drop. Choose a location that receives sun or part shade, avoiding full shade. Snowdrops thrive in well-drained, humus-rich soil, so make sure to add grit or sharp sand if necessary. They prefer moist but well-drained conditions, as soggy soil can be detrimental. Before planting, enrich the soil with organic fertilizer. After planting, water well and maintain slightly moist conditions during their bloom period from January to March. Remember, allowing the foliage to remain post-bloom helps store energy for next season’s growth.

Coral Bells

colorful perennial flowering plant

After appreciating the elegance of snowdrops, let’s explore coral bells, a versatile perennial that’s perfect for adding color and texture to your garden in December. When considering coral bells care, it’s essential to plant them in late fall or early spring, ensuring they thrive in moist, well-drained soil. Hardy in USDA zones 4-9, they grow at a moderate pace and flourish in woodlands, rock gardens, or containers. Protect them from frost with mulch and remove dead leaves to prevent fungi. Among the coral bells varieties, you’ll find striking options like ‘Ginger Ale’ and ‘Plum Pudding’. A light layer of compost in spring helps maintain their vigor without overfeeding, keeping them healthy and vibrant throughout the season.

Daphne

daphne s unique botanical characteristics

When it comes to adding a touch of elegance and fragrance to your winter garden, Daphne odora stands out as a remarkable choice. This evergreen shrub typically reaches 3-4 feet tall and 3-5 feet wide, displaying glossy, deep green foliage. I recommend considering various Daphne varieties like ‘Aureomarginata’ with its striking yellow margins or ‘Eternal Fragrance,’ which blooms from spring to late fall. For optimal Daphne care, plant it in well-draining soil and provide partial shade to protect it from harsh afternoon sun. Regular watering is crucial, but be cautious of overwatering. This resilient plant also resists deer and rabbits, making it a reliable addition to your landscape. Enjoy its exquisite citrus-like fragrance during winter months!