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A size chart showing 4 different options for Perennial Plants: 4.5" Eco+ Elite (5-8" plant height, 4.5" pot width, 5" pot height); 0.65 Gallon (6-14" plant height, 6.5" pot width, 6.5" pot height); 1 Gallon (6-24" plant height, 6.5" pot width, 7.13" pot height); 2 Gallon (18-28" plant height, 8.88" pot width, 9.38" pot height).
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A size chart showing 4 different options for Perennial Plants: 4.5" Eco+ Elite (5-8" plant height, 4.5" pot width, 5" pot height); 0.65 Gallon (6-14" plant height, 6.5" pot width, 6.5" pot height); 1 Gallon (6-24" plant height, 6.5" pot width, 7.13" pot height); 2 Gallon (18-28" plant height, 8.88" pot width, 9.38" pot height).
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'Storm Cloud' Bluestar (Amsonia tabernaemontana)

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You can only choose one Ship Week per order for all plants in order to check out.
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Regular price $3799
Regular price $3799 Sale price $3799
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How Does Proven Winners® Measure Plant Sizes?

We list our plants by container size, which reflects the amount of soil and root growth each plant has when it ships. Actual plant height and width vary by variety and season, and many plants grow quickly as the weather warms.

To help you understand what to expect, refer to our size guide below. You can also find each plant’s approximate arrival size and mature size on its product page.

How Does Proven Winners® Measure Plant Sizes?

We list our plants by container size, which reflects the soil volume and root growth each plant has at shipping. Actual height and width vary by variety and season, and many plants grow quickly as temperatures warm.
 
For a quick reference, check the size guide below—you’ll also find each plant’s estimated arrival size and mature size on its product page.

How Does Proven Winners® Measure Plant Sizes?

We list our plants by container size, which reflects the soil volume and root growth each plant has at shipping. Actual height and width vary by variety and season, and many plants grow quickly as temperatures warm.
 
For a quick reference, check the size guide below—you’ll also find each plant’s estimated arrival size and mature size on its product page.

Plant Height By Container Size

This chart highlights the typical heights for each size category while also showing how container sizes compare, giving you a clear, straightforward way to understand plant size at arrival and choose the best fit for your gardening needs.

This chart shows typical plant heights and compares container sizes, helping you quickly understand arrival size and choose the best fit.

Plant height size guide chart consisting of eco+ grande, eco+ elite, Combination, Royale, 0.65 gallon, 1 gallon, 2 gallon

Soil Volume By Container Size

This chart shows the typical soil volume for each container size, listed in both imperial and metrics units for easy comparison.

Soil volume size guide chart consisting of eco+ grande, eco+ elite, Combination, Royale, 0.65 gallon, 1 gallon, 2 gallon
Supertunia Vista® Paradise Petunia and ColorBlaze® Strawberry Drop Coleus planted together in a garden

Proven
Winners®
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Perovskia Denim 'n Lace & Tecoma Chicklet Orange planted in the ground

Proven
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Up close photo of Invincibelle smooth hydrangea

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Shrubs

Proven winners supplies on a table consisting of proven winners water wise, fertilizer, and tubing

Proven
Winners®
Supplies

Proven Winners® Annuals

Proven Winners® Perennials

Proven Winners®
Shrubs

Proven Winners®
Supplies

Orders placed before 11am ET will ship same day. Orders placed after 11am ET will ship next day. Annual orders ship Monday – Wednesday. Perennial, Shrub, and Hardgood orders ship Monday – Friday.
  • Free Shipping $175+
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'Storm Cloud' Bluestar is a striking perennial that offers year-round beauty with its unique seasonal display. In spring, new stems emerge in a near-black hue, accompanied by dark green leaves veined with silver, creating a dramatic contrast. The stems retain their deep color throughout the season. Late spring brings a stunning profusion of light periwinkle blue, star-shaped flowers that completely cover the foliage, continuing to bloom for many weeks. While spring is the height of its beauty, 'Storm Cloud' maintains a strong garden presence throughout the summer and fall. Its wide, mounded habit makes it an excellent choice for replacing shrubs in the landscape, offering both visual appeal and structural interest.

  • 24-30 inches tall and 38-42 inches wide at maturity
  • Hardy in zones 4-9, be sure to check your USDA zone to ensure success
  • Plant in part to full sun (4+ hours daily)
  • Space plants 38-42 inches apart for best results
  • Produces periwinkle blue, star-shaped flowers late spring to early summer
  • Maintains dark green foliage on black stems spring to frost
  • Great for borders, landscapes, mass planting, cut flower and foliage
  • Resists deer
  • Heat tolerant, low maintenance, fall interest 

Care: Fertilize with Proven Winners® Continuous Release Fertilizer in spring. Cutting the stems back to within 6-8" of the ground after flowering will result in fuller growth.

Shipping Info:

  • Enjoy free shipping on orders over $175
  • Size at shipping varies by season, plant, and trimming schedules
    • Quart perennials are 5-8 in. at the time of shipment
    • 0.65 Gallon perennials are 6-14 in. at the time of shipment
    • 1 Gallon perennials are 6-24 in. at the time of shipment
  • Perennials shipped Nov-Apr will arrive dormant; perennials shipped Apr-Oct will arrive green or in bloom

 

Read our guide to get started with planning a garden
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