Photo by Melody

PlantFiles: Big Betony
Stachys macrantha

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Family: Lamiaceae (lay-mee-AY-see-ee) (Info)
Genus: Stachys (STAK-iss) (Info)
Species: macrantha (ma-KRAN-tha) (Info)

Synonym:Stachys grandiflora
Synonym:Stachys spicata

One vendor has this plant for sale.

9 members have or want this plant for trade.

Category:
Perennials

Height:
12-18 in. (30-45 cm)

Spacing:
12-15 in. (30-38 cm)

Hardiness:
USDA Zone 4a: to -34.4 C (-30 F)
USDA Zone 4b: to -31.6 C (-25 F)
USDA Zone 5a: to -28.8 C (-20 F)
USDA Zone 5b: to -26.1 C (-15 F)
USDA Zone 6a: to -23.3 C (-10 F)
USDA Zone 6b: to -20.5 C (-5 F)
USDA Zone 7a: to -17.7 C (0 F)
USDA Zone 7b: to -14.9 C (5 F)
USDA Zone 8a: to -12.2 C (10 F)
USDA Zone 8b: to -9.4 C (15 F)

Sun Exposure:
Full Sun

Danger:
Unknown - Tell us

Bloom Color:
Violet/Lavender
Purple

Bloom Time:
Mid Summer

Foliage:
Herbaceous

Other details:
Average Water Needs; Water regularly; do not overwater

Soil pH requirements:
6.1 to 6.5 (mildly acidic)
6.6 to 7.5 (neutral)
7.6 to 7.8 (mildly alkaline)

Patent Information:
Non-patented

Propagation Methods:
By dividing the rootball

Seed Collecting:
Bag seedheads to capture ripening seed
Allow seedheads to dry on plants; remove and collect seeds
Properly cleaned, seed can be successfully stored

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Profile:

4 positives
No neutrals
No negatives

Gardeners' Notes:

RatingAuthorContent
Positive StellaElla On Jun 9, 2011, StellaElla from Georgetown, ON
Canada wrote:

A vigorous and healthy plant not prone to pests/disease with beautiful spires of purple flowers. Doesn't seem to spread out by itself, divide in very early spring to cover more of the garden. Very impressed with this plant, considering the poor, clay soil if my yard!

Positive llebpmac_bob On Jul 9, 2004, llebpmac_bob from Zephyr
Canada wrote:

It's hard to understand why more people don't grow this plant today. I gather it was a more popular selection 50 years ago. While it's not spectacular it is an attractive plant even when not in bloom. The flowers last a long time and will fit into many colour schemes without clashing and it seems to be very hardy. I'm growing mine on the west side of the barn against a white wall with a mix of dianthus, herbaceous potentillas, heliopsis and hollyhocks. I just wish I had bought a couple more plants when I found this one after several seasons of looking.

Positive naturepatch On May 6, 2002, naturepatch from Morris, IL (Zone 5b) wrote:

If you are looking for an upright plant for part shade, this it is. It has a long bloom time, which can be extended if deadheaded, and it stays in nice neat clumps. It does not lean toward the sun. While the flowers may not be spectacular, they will add color to that difficult spot.

Positive Terry On Mar 8, 2001, Terry from Murfreesboro, TN (Zone 7a) wrote:

This cultivar is a clump-forming perennial with whorls of violet-purple, two-lipped, tubular flowers bloom in upright spikes in late spring. Basal rosettes of wrinkled, heart-shaped, hairy, scallop-edged, medium green leaves (to 3.5" long) form an attractive mat of foliage. It more closely resembles some of the salvias (particularly when in flower) than the popular, fuzzy-leaved Stachys byzantina.

Regional...

This plant has been said to grow in the following regions:

Ashdown, Arkansas
Eveleth, Minnesota
Ellisville, Missouri
Clifton Park, New York
Oneonta, New York
Pickerington, Ohio



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