Images Depict Mature Plants
Delaware Valley White Azalea
Rhododendron 'Delaware Valley White'
Delaware Valley White is the azalea I recommend when people want classic, clean white spring blooms with evergreen structure that makes the landscape look finished year-round. It’s a perfect foundation shrub for part shade—easy to tuck into mixed borders, strong in containers, and gorgeous in small drifts that frame a walkway or entry. Plant it in well-drained soil, keep it evenly moist while it establishes, and you’ll have a spring show you can count on.
Take 20% OFF SITEWIDE.
Use Coupon Code: EARLYBIRD20
📦 Free shipping on orders over $99.
Delay shipping by leaving us a message at Checkout.
Share:
Pure White Spring Blooms + Evergreen Structure for Partially Shaded Gardens
Classic Pure White Flowering Azalea
If you’re looking to buy a white azalea online that delivers a classic spring show without taking over your landscape, Delaware Valley White is a proven favorite. In mid-spring, it opens clusters of pure white, trumpet-like flowers—often with a soft yellow throat—creating that bright, “freshly dressed” look that makes entry beds and foundation plantings feel instantly upgraded.
Because it’s an evergreen azalea, the plant keeps your beds looking full and intentional even after bloom season—giving you year-round green structure where many flowering shrubs disappear.
Easily Managed Size
Garden Goods Direct lists the Delaware Valley White Azalea as approximately 4–5 feet tall and 3.5–4 feet wide, with an upright, broadleaf evergreen habit that’s easy to design around. That size is a sweet spot for homeowners: substantial enough to anchor a bed, but still compact enough to fit within foundation lines and mixed borders.
It also responds well to light shaping if you want a more tailored outline, making it a great “repeat plant” for clean, cohesive mass plantings along walkways and property edges.
Gives So Much and Asks So Little
For optimal performance, provide this azalea with part shade to filtered sun and well-drained soil—especially important during the winter months. Consistent moisture during establishment helps it root in quickly, but drainage is the deal-breaker for long-term success.
Azaleas also prefer acidic, organic-rich soil. A pine bark or pine needle mulch, combined with a gentle soil-acidifying feeding program, can make a noticeable difference in vigor and bloom.
Instant Curb Appeal
Delaware Valley White Azalea is a natural fit for foundation plantings, woodland edges, mixed borders, and containers—anywhere you want spring brightness in part shade. Its white blooms pair beautifully with boxwood, hollies, hostas, ferns, and spring bulbs for a layered, high-end look.
It’s also a smart buy for curb appeal: plant a few in a drift near the front walk, and you get a clean evergreen backdrop plus a dependable spring “wow” that reads from the street.
| Hardiness Zone: | 6-9 |
|---|---|
| Mature Height: | 4 to 5 feet |
| Mature Width: | 3.5 to 4 feet |
| Sunlight: | Part shade to filtered sun |
| Foliage: | Evergreen |
| Flower Color: | Pure white with lightly dusted yellow throat |
| Soil Condition: | Well-drained; prefers acidic, organic-rich soil |
| Water Requirements: | Water well until established |
| Wildlife Value | Pollinator-friendly spring blooms |
| Resistance | Drought-tolerant once established; deer pressure varies by site |
| Uses: | Mixed borders, containers, foundation plantings |
How to Care for Delaware Valley White Azalea
Be sure to read our planting instructions to ensure a healthy and happy Delaware Valley White Azalea plant for years to come!
-v1768323569718.png?92x91){kind=icon}
How should I plant Delaware Valley White Azalea?
Select a spot with partial shade or filtered sunlight and soil that drains well. Dig a hole 2–3 times wider than the root ball and just as deep, then set the plant so that the top of the root ball sits level with (or slightly above) the surrounding soil to protect the roots from sitting in wet soil. Backfill gently, water deeply, and avoid compacting the soil. Space with the mature width in mind, then apply 2–3 inches of mulch (keeping it off the stem/crown) to hold moisture and keep the roots cool. If your native soil is heavy, amend the planting area broadly with organic matter or plant on a slight mound to improve drainage—azaleas reward that extra step
-v1768323613044.png?89x84){kind=icon}
How often should I water Delaware Valley White Azalea after planting?
For the first 6–10 weeks, water deeply 2–3 times per week (adjust for rainfall and heat), focusing on even moisture as roots spread into the surrounding soil. Azaleas have relatively shallow roots, so consistent moisture matters more than occasional soaking and drying. After establishment, water during dry spells—especially in summer heat and before the ground freezes in winter. Once rooted in, Delaware Valley White can be relatively steady and low-drama, but it performs best when the soil stays evenly moist, not soggy.
When should I fertilize Delaware Valley White Azalea?
Feed in early spring as growth begins, using a fertilizer labeled for azaleas/rhododendrons (acid-loving plants). This supports leaf color, bud set, and overall vigor—especially in landscapes with neutral or slightly alkaline soil. For a soil-building alternative, top-dress with compost and refresh mulch annually (pine bark/pine needles are ideal). Avoid heavy late-season feeding, as it can stimulate tender growth at the wrong time and compromise cold-weather resilience.
When and how should I prune Delaware Valley White Azalea?
Most of the time, this shrub needs little to no pruning—a big reason it’s such an easy evergreen azalea to buy online. If you want to shape it or control size, do any pruning right after flowering so you don’t remove next year’s buds. Use hand pruners to selectively remove stray shoots, maintaining a natural outline rather than shearing. Light thinning improves airflow (helpful for overall plant health), and removing dead or crossing branches keeps the shrub dense and attractive over time.
