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Boursault Rhododendron

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  • Partial Shade to Partial Sun (3 - 6 Hours Of Direct Sunlight)
  • Mature Height 6 - 7 Feet
  • Mature Spread 6 - 7 Feet
  • Growing Zones 4 - 8

Large lavender blooms in spring, evergreen foliage and an ability to thrive in fairly shady conditions make the Boursault rhododendron an excellent addition to certain landscapes. Flowers first appear as deep purple buds before opening to a lavender with occasional reddish-brown markings. These funnel-shaped blooms appear in clusters at the end of branches and really put on a show. When planted in a well-chosen and prepared site, the Boursault rhododendron is a dependable performer with low maintenance requirements.

Native to the eastern United States and hardy in USDA zones 4 to 8, this plant forms dense thickets that offer a nectar source for butterflies and shelter for birds and wildlife. The blooms and rounded shape alone can make it an interesting accent plant. This cultivar of Rhododendron catawbiense also has a dense, spreading structure that is also perfect for an informal border. It has a moderate growth rate and can tolerate urban pollution.

Boursault Rhododendron Care

Choosing and preparing the ideal planting site for this shrub is important. It prefers partial shade, with some protection from hot afternoon sun and strong winter winds. Its roots require well-drained soil, but do not like to dry out or overheat, so regular watering during dry weather and mulching around the shrub helps to retain moisture and keep soil temperatures cool. Additionally, rhododendrons like this one need acidic, organically-rich soil to thrive, so work compost or another organic material into the site prior to planting and occasionally apply a fertilizer for acid-loving plants.

Rhododendrons bloom in the spring on growth from the previous summer, so any routine pruning should happen shortly after blooming has finished. Cut back stems about one-third in order to give the plant the desired shape. Planting a Boursault rhododendron in an improper or poorly-drained site can lead to problems with diseases and poor plant health.

Boursault Rhododendron Spacing

Boursault rhododendrons work well as an accent plant or as an informal hedge or border. It has a spreading branch structure and grows to be 6 to 10 feet tall and wide; plant specimens or hedges with this spacing in mind. It has shallow roots that do not like to be disturbed, so avoid planting annuals or cultivating around the shrub.

Boursault Rhododendron Information

USDA Hardiness Zones: 4 - 8
Plant Type: Shrubs
Light Exposure: Partial Shade to Partial Sun (3 - 6 Hours Of Direct Sunlight)
Mature Height: 6 - 7 Feet
Mature Spread: 6 - 7 Feet
Spacing: 6 - 7 Feet
Habit: Upright
Flower Color(s): Purple
Flower Description:
Bloom Period: Mid-May
Foliage Type: Evergreen
Foliage Color(s): Green
Foliage Description:
Seasonal Interest: Spring Flowering
Watering: Average
Resists: Deer
Tolerates: Drought
Attracts: Butterflies
Container Role:
Uses: Borders, Wildlife Gardens
Features: Attracts Pollinators, Cut Flowers, Native to North America
Common Name: Boursault Rhododendron
Other Name(s):

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Plant Addict Guarantee (Included On All Plant Orders)

Plant Addicts guarantees your plant(s) will arrive happy and healthy, but the plant(s) are being shipped through the mail and accidents happen. If the plant is dead, has dried out roots or the incorrect item was shipped just notify Plant Addicts within 3 days upon delivery. We may ask for pictures but will try to make it as easy as possible for you. Please note plant(s) with damaged branches or wilted leaves will not qualify for this guarantee. Plants are very resilient and will rebound quickly when cared for correctly.

For information on how to care for you new plant please check out our guide. Guide: How to Care for Your New Plant(s)

Plant Addicts Warranty - 1 Year (Extra Purchase Required)

We encourage all plant lovers to purchase the Plant Addicts Warranty whether you’re new or an expert. There are many variables outside our control and yours that can cause the demise of your plant(s). Examples would be hungry animals, drought, poor soil conditions, over watering, disease, insects & many other factors. The Plant Addicts Warranty is a 1 year warranty protecting you from all the unknowns and will replace your plant if it moves on to the plant afterlife.

The warranty is purchased on a per plant basis and must be purchased at the same time as the plant purchase. We will cover 100% of the price of the plant but the warranty does not cover shipping cost. Simply let us know if your plant has died within one year of receiving it and we’ll get you a new one shipped out. We may ask for photos for documentation purposes but again we’ll try to make it as easy as possible.

For more information, please go to our Shipping & Returns page at the bottom of the website.

Guide: How to Care for Your New Plant(s)

Planter Shipping

Standard Colors: 2-3 business days

Special Order Colors: 8 weeks - this is due to the planter being custom made with the color(s) of your choice

Please Note: On special orders there can not be any cancellations

Plant Shipping

Time of Order:

Summer Shipping

  • If there is extreme heat we’ll delay shipping.  
    • We’ll have to review what areas the plants are traveling through along with your location

Once your plant is shipped you’ll receive an email with tracking information. Depending on the above criteria we’ll ship your plant(s) towards beginning of the following week from your order. We put together this helpful guide of what to do when you receive your plants in the mail.

It is important to know that all of our plants are clearly labeled for which growing zones the plant can survive in. The plants are thoroughly trialed and tested in every growing zone before we state the plant can grow in a zone. Again, our #1 priority is to ship the plants to you healthy and ready to thrive in your location. So we will do everything in our power to do so.