Castle Keep® Blue Holly offers timeless evergreen elegance with a fresh twist—soft-to-the-touch, deep green foliage that maintains a lush, polished appearance all year long. A female variety, it produces bright red berries when paired with a nearby male pollinator like Castle Wall®, bringing vibrant winter color and valuable food for birds.
Its semi-dwarf, rounded habit makes Castle Keep® a versatile addition to the landscape, ideal for use as a hedge, screen, foundation plant, or even a striking specimen. The rich berries also add a festive touch to cut flower arrangements and seasonal décor. With its refined form, year-round interest, and wildlife-friendly appeal, Castle Keep® Blue Holly is a smart and stylish choice for modern landscapes.
- 3-5 feet tall and 3-4 feet wide at maturity
- Hardy in zones 5-8, be sure to check your USDA zone to ensure success
- Plant in part to full sun (4+ hours daily)
- Space plants 3-4 feet apart for best results
- Produces white flowers in the spring and red berries in the fall if a male pollinator is present
- Maintains soft to the touch deep green foliage year-round
- Blooms on old wood
- Attracts birds
- Great for borders, containers, cut flowers, hedges, edges, landscapes or mass planting
- Fall and winter interest
Care: Fertilize with Proven Winners Continuous Release Plant Food in spring and mid summer. It’s best to avoid pruning, as flowers grow from old wood. If you need to do a few maintenance cuts, you can do so in the late winter or early spring.
Pollination: This is a female variety. Plant one male for every seven females, and be sure to position them within 50 feet of each other so they can get good cross-pollination.
Shipping Info:
- Enjoy free shipping on orders over $175
- Size at shipping varies by the season and plant
- Quart shrubs are 5-8" tall at shipment
- 1-Gallon shrubs are 6-24" tall at shipment
- Shrubs ship dormant November through April
Read our guide to get started with planning a garden
