Hardiness: USDA Zone 3a: to -39.9 °C (-40 °F) USDA Zone 3b: to -37.2 °C (-35 °F) 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) USDA Zone 9a: to -6.6 °C (20 °F) USDA Zone 9b: to -3.8 °C (25 °F) USDA Zone 10a: to -1.1 °C (30 °F) USDA Zone 10b: to 1.7 °C (35 °F)
On Feb 18, 2012, whitesam9 from Dayton, OH (Zone 5b) wrote:
A very useful plant for the transitional period from late Summer into early Fall. Mine bloom for about two months through August and September. I have them planted in a very shady shot. They flower fine in the shade, but I have to stake them to keep them upright. (Otherwise they try to sprawl toward the sunnier side of the bed.) My plants get taller than the height range listed on this page. Mine grow to about 4 1/2 feet.
On Jul 28, 2009, Eldine from Wellsville, NY (Zone 4b) wrote:
Yes, it spreads fast, so put somewhere with boundaries. I LOVE this plant in late summer, zone 4, en masse. I put yellow snapdragons or nasturtiums in front (I pull up some of the physostegia in spring to make room) and the effect is beautiful! I will keep this plant where it is, pull up alot of it in the spring, and NOT transplant it to any of my other gardens.
On Jul 8, 2009, weeds4wildlife from Clarksburg, NJ wrote:
An easy, vigorous, native plant. An attractant for Hummingbirds and butterflies. We grow five varieties, in ten different colonies: pink, lavender, white, giant and variegated.
Aggressive in moist soil (not invasive, it is native to 37 states, and parts of Canada). A simple barrier, keeps the stolons in check, inexpensive 4" plastic lawn edging, or plant in a pot or bucket with the bottom removed.
The variegated is far less aggressive. We grow (the variegated) without a barrier, and only the mildest of spreading over a couple of years.
On Mar 13, 2008, distantkin from Saint Cloud, MN (Zone 4b) wrote:
No matter what, this plant will always make me smile. Here in zone 4 it is the first thing to be green. My yard is a big slushy, muddy mess but this plant has wonderful green leaves. There is snow all around it and everything is still dead. The Obedient plant even beat the bulbs. A welcome sign of Spring.
On Apr 28, 2007, Artgal from Evans, GA (Zone 7b) wrote:
I was torn about this plant because on the positive side it has lovely purple flowers in the late fall when other plants are weary but its invasive properties overshadow its prettiness. Mine grow (and grow) in a fertile watered soil and it may be years of digging them out before I am rid of them. I read that they spread slowly in a less rich and drier soil.
On Jul 13, 2006, jg48650 from Pinconning, MI (Zone 6a) wrote:
We planted three obedience plants last year, and now we have much bigger clumps where each where planted. It seems to spread very quickly, is very bendable, and grows back even when broken. It is very resilient! Oddly enough, ants love it, so it's interesting to watch them climb up and down the 3-4 foot stems to the flowers.
On Oct 23, 2004, SalmonMe from Springboro, OH (Zone 6a) wrote:
This plant's invasiveness is only kept in check if it is divided every 1-2 years (zone 6). High maintenance in my book. Attracts bees in excess as well. Only plant if you like dividing plants! Also good if you're looking for a naturalizing plant that will cover an area quickly.
On Aug 22, 2004, saya from Heerlen Netherlands (Zone 8b) wrote:
The pink one flowers some time after the white one flowers (which is pretty too but turned out to be very weedy). The pink one flowers mid to end September at my place (8b) on an only afternoon-sun-spot. That's why it is a more welcome plant. It gives colour when most flowers already have faded away. And....the best thing..it doesn't set so many seeds, so it doesn't spread the way the white one does. I think it is because most of the bees/insects are already gone ...?
I love to play with the flowerheads which are movable around the stem. The Dutch name is 'Scharnierbloemen' what means 'hinge flowers'. You can 'comb' the flowers to any ( horizontal)side around the stem you want and they stay like that...I've always thought that's why you call it 'obedient'.
On Sep 23, 2003, Karenn from Mount Prospect, IL (Zone 5a) wrote:
Yes, the standard variety of this plant is quite invasive. If this is a deterrent, try the variegated-leaf variety. Soft pink flowers fairly late (if you pinch back by 1/2 in June) when not a lot is is bloom. And not nearly as aggressive as it's parent! Quite lovely, and non-invasive even in sun with constantly moist soil!
On Apr 14, 2003, Eaglewalker from Memphis, TN (Zone 7b) wrote:
Last spring, I put Physostegia on a south-facing slope with depleted high pH clay soil. I practically never water once a plant is established. It flowered beautifully in spite of a hot dry summer, and it's come back for more after a long cold snowy winter. My local area garden book says that Physostegia should be lifted each spring and replaced in good soil, because it's a heavy feeder and depletes the soil quickly (especially "Vivid").
On Aug 31, 2002, Terry from Murfreesboro, TN (Zone 7a) wrote:
Easy to grow, but remember the reason it's called obedient has nothing to do with its growing habits :) It will spread - not a bad thing when you're trying to fill out a garden bed, but it can be a problem if you need a mild-mannered plant to stay in one spot.
I've planted this in areas where I can't reach with a hose, and left it up to mother nature to keep it watered - it did great.
On Nov 6, 2000, jody from MD &, VA (Zone 7b) wrote:
Easy to grow. Grows to 3' high, spreads readily, slightly invasive but kept in check by division. Flowers are produced on spikes, come in pink/lavender or white, and bloom in late summer. Best cultivated in sun or light shade, moist but well drained soil. Can propagate by division, seed or cuttings. Hardy zones 3-10.
This plant has been said to grow in the following regions:
Jones, Alabama Vincent, Alabama Clayton, California Fairfield, California Glen Avon, California Hercules, California Huntington Beach, California Redding, California Stockton, California Brookside, Colorado Bartow, Florida Jacksonville, Florida North De Land, Florida Saint Petersburg, Florida Spring Hill, Florida The Villages, Florida Aldora, Georgia Evans, Georgia Panthersville, Georgia Stone Mountain, Georgia Belleville, Illinois Divernon, Illinois Mount Prospect, Illinois Mount Zion, Illinois Oak Forest, Illinois Plainfield, Illinois Churubusco, Indiana Fishers, Indiana Homecroft, Indiana Sioux City, Iowa Lansing, Kansas Barbourville, Kentucky Ewing, Kentucky London, Kentucky Louisville, Kentucky Abita Springs, Louisiana De Ridder, Louisiana Homer, Louisiana Lacombe, Louisiana South Portland, Maine Redland, Maryland Chatham, Massachusetts Cordaville, Massachusetts Reading, Massachusetts Sandwich, Massachusetts Southwick, Massachusetts Charlevoix, Michigan Pinconning, Michigan Troy, Michigan Coates, Minnesota Fridley, Minnesota Hibbing, Minnesota St Cloud, Minnesota St Paul, Minnesota Clifton Hill, Missouri Cole Camp, Missouri Columbia, Missouri Conway, Missouri Fort Benton, Montana Blair, Nebraska Auburn, New Hampshire Pinardville, New Hampshire Frenchtown, New Jersey Hamilton, New Jersey Millstone Township, New Jersey Ramblewood, New Jersey White Horse, New Jersey Roswell, New Mexico Buffalo, New York (2 reports) Cayuga, New York Clifton Park, New York Croton-on-hudson, New York Deposit, New York Hilton, New York Stannards, New York Staten Island, New York Glen Raven, North Carolina Macfarlan, North Carolina Polkton, North Carolina Belfield, North Dakota Bucyrus, Ohio Glouster, Ohio Greenville, Ohio Liberty Center, Ohio Perrysburg, Ohio Piqua, Ohio Reynoldsburg, Ohio Broken Arrow, Oklahoma Owasso, Oklahoma Eugene, Oregon Connellsville, Pennsylvania Havertown, Pennsylvania Lancaster, Pennsylvania Millerstown, Pennsylvania Quakertown, Pennsylvania Saxon, South Carolina Memphis, Tennessee Murfreesboro, Tennessee Spurgeon, Tennessee Alvin, Texas Blanket, Texas Brenham, Texas College Station, Texas Dallas, Texas Dalworthington Gardens, Texas Fort Worth, Texas Garland, Texas Hebron, Texas New Braunfels, Texas Paradise, Texas Pasadena, Texas Princeton, Texas San Antonio, Texas Sunset Valley, Texas Tyler, Texas (2 reports) Mount Olympus, Utah Provo, Utah Arlington, Virginia Chesapeake, Virginia Lanexa, Virginia Leesburg, Virginia Suffolk, Virginia Virginia Beach, Virginia West Springfield, Virginia (2 reports) Lake Delton, Wisconsin Menomonie, Wisconsin Mount Pleasant, Wisconsin Sturgeon Bay, Wisconsin Cheyenne, Wyoming