Winter Care for Broadleaf Evergreens in Kansas City
Broadleaf evergreens like boxwoods, hollies, and magnolia trees bring year-round beauty to Kansas City landscapes, but winter can be tough on these plants. Harsh winds, fluctuating temperatures, and occasional drought can cause damage if proper care isn’t taken. Here’s a guide to help your broadleaf evergreens thrive during the colder months.
Why Winter Protection Matters
Broadleaf evergreens retain their leaves year-round, which means they continue to lose moisture even in winter. This makes them particularly vulnerable to winter burn, a condition caused by desiccation (drying out) when the plant loses water faster than it can absorb from frozen soil. By taking preventative measures, you can ensure your evergreens stay healthy and vibrant.
Common Broadleaf Evergreens in Kansas City
Kansas City (USDA Hardiness Zones 6b and 7a) is home to several popular broadleaf evergreens:
Shrubs
- Boxwood (Buxus spp.): A classic choice for hedges and formal gardens.
- Hollies (Ilex spp.): Popular varieties include Japanese holly, American holly, and hybrid options like ‘Blue Princess.’
- Mahonia (Mahonia aquifolium): Spiky leaves and yellow winter blooms make it a standout choice.
- Rhododendrons (Rhododendron spp.): Hardy varieties like ‘PJM’ hybrids can survive Kansas City winters with proper care.
Groundcovers
- Wintercreeper (Euonymus fortunei): A versatile option that can climb or spread as groundcover.
- Pachysandra (Pachysandra terminalis): Thrives in shaded areas with glossy evergreen leaves.
Trees
- Southern Magnolia (Magnolia grandiflora): Cold-hardy cultivars like ‘Bracken’s Brown Beauty’ add elegance to landscapes.
- American Holly (Ilex opaca): Provides year-round interest with its shiny leaves and bright red berries.
Steps to Protect Broadleaf Evergreens
1. Strategic Placement
Position your plants where they’ll be shielded from strong winds and harsh afternoon sun. North- or east-facing locations near buildings or fences can offer natural protection.
2. Watering Tips for Winter Care
Maintaining adequate soil moisture is essential:
- Fall Preparation: Deeply water your evergreens before the ground freezes to ensure they enter winter hydrated.
- Winter Watering: During dry winters, water on mild days when temperatures are above 40°F and the ground isn’t frozen. Water at midday to allow absorption before evening temperatures drop.
- How Much to Water: Broadleaf evergreens need about 1 inch of water per week, including precipitation. During dry periods, apply enough water to moisten the soil to a depth of 6 to 12 inches.
- Snow Precipitation Equivalent: On average, 10 inches of snow equals about 1 inch of water. Light, fluffy snow provides less water, while dense, wet snow offers more (about 1 inch of water per 5 inches of snow). Adjust your watering schedule accordingly during dry spells.
3. Mulching
Apply a 2-4 inch layer of organic mulch around the base of your plants. This insulates roots, retains moisture, and regulates soil temperature. Keep the mulch a few inches away from the trunk to prevent rot.
4. Avoid Late Pruning and Fertilizing
Refrain from pruning or fertilizing in late fall. These activities can stimulate new growth that’s more susceptible to winter damage. Instead, plan to prune in early spring and fertilize during the growing season.
5. Physical Protection
For especially vulnerable plants, consider creating barriers with burlap or similar materials. These can shield plants from wind, sun, and desiccation. Windbreaks made from fences or larger plants can also provide added protection.
Benefits of Proper Winter Care 
By following these steps, your broadleaf evergreens will emerge from winter healthy and ready to flourish in spring. A little effort now can save you time and money later by reducing the risk of winter damage.
Whether you’re protecting boxwoods, hollies, or other evergreens, Envision Lawn and Tree is here to help. Contact us for expert advice or assistance with winter landscaping care.