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Hardiness Zone Map


Rheum

Ornamental Rhubarb

Kin to the edible Rhubarb, these ornamental perennials spawn large brawny leafage and tall intriguing floral spires. Rheum can be utilized as a specimen in the mixed border, the landscape or skirting the water’s edge. They require deep, rich soil and appreciate mulching in the summer to keep their roots cool, as they detest extreme heat.

<i>Rheum</i> ‘Ace of Hearts’ <i>Rheum</i> ‘Ace of Hearts’

Lustrous, crinkled and richly red when they first unfurl in the spring, large spade-shaped leaves make a bold imposing statement all season long. The grandiose foliage matures to a handsome deep green on top and grows upright, flaunting prominent veins and opulent burgundy undersides, while starry pale pink blooms on tall flower spikes add a dainty touch. 

 

Blooms June–July

Size: 4' 0" – 5' 0" high x 3' 0" – 5' 0" wide.

Hardy to zone 5.

Headlining a tall wondrous tower clothed in overlapping hand-sized creamy yellow bracts that veil its insignificant flowers and seeds, this magnificent perennial hails from the high altitude, lush marshy meadows and stream sides of Tibet and western China. Deep roots sprout a lustrous, low basal rosette defined by distinctive white-veined lance-shaped leaves. The long lasting scalelike bracts become streaked with burgundy, while autumn brings fiery claret and orange to the foliage.

A seldom-offered rarity, Alexander’s Rhubarb delivers extraordinary architectural panache to a sunny, yet cool, rich damp location.

Blooms May – July.

Size: 3' 0" high x 18" wide.

Hardy to zone 5.

<i>Rheum palmatum</i> var. <i>tanguticum</i>

One of the most pleasing of the tall ornamental rhubarbs, this prehistoric-looking specimen has colossal divided leaves that first emerge in reddish bronze tones. Warm weather brings dark green foliar hues on top and purple-infused undersides plus airy maroon panicles surmounting towering flower stalks. Later red shades enliven the foliage for a notable fall finale. Stage with another dynamic performer like Veronicastrum ‘Adoration’.

Blooms June–July

Size: 6-1/2' high x 5' 0" wide.

Hardy to zone 5.

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Current Staff's Favorite Plant

Current Staff's Favorite Plant

Our feature plant: Primula vulgaris ssp. sibthorpii

Precious Primulas, Prized Pulmonarias and Fabulous Foliage!

Primulas offer elaborately-crafted colorful blooms in varied shapes,……

including draped bells, candelabras, drumsticks and pincushions. Many Primrose flowers  waft a delectable scent. Second-to-none for the dappled recesses of your garden, these easily grown, cold-hardy Primulas crave well-drained, humus-rich niches with adequate moisture and good air circulation. They can grace containers or be planted in swaths along shady walkways or in woodland gardens. Be sure to peruse our online Primulas.

Prized Pulmonarias……

One of the earliest perennials to bloom, you can be picking their enchanting urn-shaped flowers in February while the rest of the garden still slumbers. Many cultivars showcase an array of mercury-hued dapples, speckles and spots, while others sport solid pewter sheens or striking silver streaks. Easy-to-grow Pulmonarias prefer the lacy light of a woodland setting plus cool moist soil. Our newsletter also includes a handful of other shade-loving perennials that promise alluring foliage. Many of these perennials can be partnered with Pulmonarias for intriguing foliar contrast. You may wish to check out our online Pulmonaria offerings.

All of us plant and paper wranglers wish you good health and happy digging!

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