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Hardiness Zone Map


Veronicastrum

Culver's Root

These elegant perennials impart a lofty vertical element to the late summer garden. Adorned with distinctive narrow spires of densely arranged tiny flowers, Veronicastrum are native to meadows and woodlands, and are simple to grow in adequately moist soil.

Studded with lavender blue blooms, the lengthy flower spikes make an elegant presentation. Arranged in groups, they stand proudly on upright, sturdy stems, which sport spaced whorls of neat, broadly lanceolate leaves. This noble Asian native offers an admirable contrast to mounding forms, such as Amsonia hubrichtii.

Blooms July–September.

Size: 5' 0" high x 18" wide.

Hardy to zone 4.

<i>Veronicastrum sibiricum</i> ‘Red Arrows’

True to its name, this distinctive undemanding Coen Jansen introduction asserts deep rosy red buds squeezed onto a central spike, surrounded by slightly smaller side stalks all opening at the same time and presenting a unique arrow shape. Cherished by bees and butterflies, the striking spires unfurl a score of tiny violet flowers, while whorled lanceolate leaves attire tall steadfast stems. A glamorous upright mainstay for any planting, "Red Arrows" soars amongst Trifolium rubens, Phlox "Nicky" and Sedum "Matrona" in a prairie-style landscape or a more formal setting.

Blooms July–September

Size: 4' 0" high x 18" wide.

Hardy to zone 4.

<i>Veronicastrum virginicum</i> ‘Adoration’

In addition to the stylish blooms, this sought-after Veronicastrum gives you good reason to adore it. When tall valiant stems stretch skyward, they strut prismatic purple shades that are easily spotted from a distance, promising to turn more than a few heads. Dense, round pink buds set the stage for ethereal-looking lilac flowers on candelabra-like spires, further enhancing the dashing whorls of pointed deep green leaves.

Blooms August–September

Size: 4' 0" – 5' 0" high x 2' 0" wide.

Hardy to zone 4.

<i>Veronicastrum virginicum</i> ‘Album’

Resembling glowing tapers, erect snowy white racemes tipped with green buds make a crisp classic statement. The luminous blooms hold court above whorls of horizontally set deep green leaves that grow at intervals along sturdy upstanding stems. Veronicastrum "Album" commands our attention, while it sheds light on cohorts such as Persicaria "Blackfield" or Helenium "Rotgold".

Blooms August–September

Size: 4' 0" high x 15" wide.

Hardy to zone 4.

‘Apollo’s leafy stems taper delicately into foot-long lilac racemes tipped with vivid green buds, which bend and curve, adding a playful air to its imposing carriage. Display graceful ‘Apollo’ with Angelica archangelica’s rounded umbels, and the rosy plumes of Miscanthus ‘Nippon’.

Blooms August – September.

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

Hardy to zone 4.

<i>Veronicastrum virginicum</i> ‘Erica’

‘Erica’s staunch leafy stems taper delicately into long 2-toned racemes of reddish buds and small tightly packed pale pink flowers with prominent darker stamens. Opening from the base up, the slender wands bend and curve, adding a playful air to the impressive carriage below. Display this graceful Veronicastrum with Angelica ‘Vicar’s Mead’ rounded umbels and the wine-red blades of Panicum ‘Ruby Ribbons’.

Blooms July–September

Size: 3' 0" – 4' 0" high x 15" wide.

Hardy to zone 4.

Come late summer, when afternoon shadows lengthen across the garden, we watch for the setting sun to illuminate this stately specimen, its 15 in. long rosy lilac racemes culminate in narrow, often pendulous, vivid green-budded tips. Strong stems bearing whorled, darkly verdant linear foliage seldom need staking. Pair with arching Stipa gigantea in the border for a natural look.

Blooms August–September

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

Hardy to zone 4.

<i>Veronicastrum virginicum</i> ‘Lavendelturm’

Coined Lavender Towers, this noble Ernest Pagels introduction is aptly named. Straight-up stems garbed in handsome greenery-whorled, toothed and pointed-give way to long branched spikes embellished with lovely pale purple flowers.

Blooms August–September

Size: 4' 0" – 5' 0" high x 2' 0" wide.

Hardy to zone 4.

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Current Staff's Favorite Plant

Current Staff's Favorite Plant

Our Featured Plant:  • Heptacodium miconioides

Click here to view our mid October 2019 Newsletter featuring "Heptacodium minoniodes: A Shrub for all seasons & Salvia Splendor!

Heptacodium miconiodes: A Shrub for all Seasons....

A denizen of China, this magnificent large shrub or small-scale deciduous tree promises to inspire you no matter what the season. Large, lustrous rich green foliage is narrowly heart-shaped amid unique exfoliating bark, which peels in thin strips to reveal a warm cinnamon-brown hue. Housed in creamy white clusters, attractive fragrant blossoms unfurl in autumn, and are followed by spectacular masses of small fruit lodged inside rosy purple calyces. Preferring moist sunny alcoves, the rounded muli-stemmed habit thwarts pests, withstands most soil types, and requires little maintenance.

Savor Late Season Salvia Blooms...

Many Salvias unleash a profusion of prismatic flowers well into autumn or up to the first frost. Offering an array of sizes, leaves and flowers, some Salvias bear bicolored blooms such as S. mexicana ‘Compton’s Form’, which sports a persistent darker-hued calyx. Even after its petals are spent, the uniquely colored calyces extend a foliar effect for weeks. Beloved by pollinators, floral designers and gardeners alike, these easy-care perennials and bushy subshrubs are tailor-made for cottage gardens, mixed borders, perennial plantings, rockeries or containers. We’ve included a handful of other plants lending late season allure that can be planted amongst the featured Salvias.

All of us Digging Dog plant wranglers wish you Happy Digging!

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