Stunningly different and showy, few shrubs can rival this outstanding selection. Silver foliage with long, cascading panicles of lavender-purple flowers are sweetly fragrant and attract many colorful pollinators, especially the tiger swallowtails. Drought resistant/drought tolerant plant (xeric). 8-12' x 8-12' wide
8-12' x 8-12' wide. 1998 Plant Select® Winner. Stunningly different and showy, few shrubs can rival this outstanding selection. The long, cascading panicles of lavender-purple flowers are sweetly fragrant and attract many colorful pollinators, especially the tiger swallowtails. The silver foliage keeps it interesting when the flowers are gone. A big grower, plant it where it can stretch its branches. Not for sale to OR and WA.
Item Package Size
Plant - 5" Deep Pot
Silver Spring Blooming Butterfly Bush
Buddleia alternifolia Argentea
5, 6, 7, 8, 9
8-12 ft. tall
8-12 ft. wide
Late spring to early summer
Average Soil, Sandy Soil, Clay Soil
Bee Friendly, Attract Butterflies, Attract Hummingbirds, Deer Resistant, Extended Bloom Time (more than 4 weeks), Fragrant Flower / Foliage
Northeast, West, Southwest, Pacific Northwest
Spring / Summer, Fall
Ships To Canada
Growing Shrubs and Small Trees: The shrubs and trees we sell are 1-2 year-old seedlings. These young plants appreciate some extra attention during their first 3 years in your landscape.
Preferred growing conditions:
Check each species soil preferences before planting. Some do well in clay while others do not.
Mulch with common mulching materials. As they get larger (2 ft. or more in height), thicken the mulch layer to a depth of 2-3 inches.
Even xeric (waterwise) species will establish better and grow more quickly when given regular irrigation during the first 3 years in the garden. As they begin to reach maturity, watering frequency can be reduced to a good deep soaking every 10 to 14 days during the heat of summer.
Plant in full sun or part sun depending on plant preference.
Dig a wide but shallow hole and enrich the soil with ample amounts of compost and Yum Yum. This will help them to grow and mature more quickly.
Most native shrubs and trees are highly recommended for providing wildlife habitat (nesting spots, fruit or seeds for songbirds and mammals, nectar for pollinators).
They are excellent for use to grow as natural (un-sheared!) hedges along fences, property lines and driveways. They live for many years once established.
Fertilize in the fall with Yum Yum Mix and good quality compost. This is most important during the first 3 years in the landscape. Established plants don't need to be fertilized (unless growth is stunted by extremely poor soils).
Where browsing animals (rabbits, deer and others) are a problem, it is advisable to protect young plants with a wire cage. These can be removed after 3-4 years in the ground.
Mulching is essential to maintain the soil moisture these woody plants need to establish their deep growing roots. Be sure and replenish the mulch in fall and summer to keep it sufficiently deep.
View more Planting Guides, or download our complete Planting Guide for tips on caring for your plants when you receive your order, as well as planting instructions for Perennials, Spring-Planted Bulbs, Fall-Planted Bulbs, Cacti & Succulents, Xeric Plants and more.
No longer available this season.
As soon as your order is placed you will receive a confirmation email. You will receive a second email the day your order ships telling you how it has been sent. Some perennials are shipped as potted plants, some as perennial roots packed in peat. The ‘Plant Information’ section describes how that item will ship. All perennials and spring-planted bulbs are packaged to withstand shipping and are fully-guaranteed. Please open upon receipt and follow the instructions included.
Perennials and spring-planted bulbs are shipped at the proper planting time for your hardiness zone. Perennial and spring-planted bulb orders will arrive separately from seeds. If your order requires more than one shipment and all items are shipping to the same address, there is no additional shipping charge. See our shipping information page for approximate ship dates and more detailed information. If you have any questions, please call Customer Service toll-free at (800) 925-9387 or contact us by email.
Our shipping rates are calculated based on our actual average shipping costs. We do not seek to profit from shipping fees, so rest assured that our shipping rates reflect an average of what it costs to get our guaranteed products safely to your door.
US Shipping Charges
Up to $19.99
$20 to $34.99
$35 to $49.99
$50 to $74.99
$75 to $99.99
$100 and Over
Canadian Shipping Charges
Up to $24.99
$25 to $49.99
$50 to $74.99
$75 to $99.99
$100 and Over
We charge one low flat rate for shipping our products even if your order requires multiple shipments. If you have any questions, please call us at (800) 925-9387.