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)
On Aug 28, 2011, hillfarm from Quesnel, BC (Zone 4a) wrote:
In this area we call this one 'Golden Glow', and an appropriate name it is, too. I am very fond of this plant & have grown it for years, since first receiving it as a "pass-along plant" from an old ranch garden. It is in full bloom right now (late August) and will continue for weeks to come. Flowers are a vibrant golden-yellow, with opening petals tinted green, and as others have mentioned it is an excellent cutflower. My planting is now partly shaded, but it definitely prefers full sun. It is a rather lanky thing, and benefits greatly from staking. Best siting would likely be back of border and against a fence where it could be inconspicuously tied for support. Easily reaches 6 feet tall. It is vigorous and does spread from the roots, but I would not call it invasive; I find it very easy to keep contained. Its companions in my garden are Plume Poppy (Macleaya), Daylily 'Europa' (Hemerocallis fulva), Globe Thistle (Echinops ritro), Joe-Pye Weed (Eupatorium), and 'Mt Fujiyama' tall perennial Phlox - all blooming at the same time and making a lovely late summer grouping. A common name I have heard, other than 'Golden Glow', is 'Outhouse Plant', because it was often planted near that necessary little building to screen it from view! I would like to add that this plant is extremely winter hardy - I would say at least to Zone 3 or even less, as I have seen it in old gardens up on the Chilcotin Plateau where winter temperatures routinely drop well below the minus 30s Celsius, albeit with generally good snow cover.
It's true that this Rudbeckia can be very easy to grow, low-maintenance and beautiful, but I find it extremely invasive in my garden. Within a few years after I took over the garden (the previous owner planted them), these plants have spread everywhere through underground runners and obscured the other perennials around them. I had to spend hours to dig them out. If anyone wants them, I have plenty more to give away!
My mother has had Golden glow all of my life, and I believe that she got it from my grandmothers. She lives in Massachusetts, and I have brought some to Moscow, Idaho, where it is doing well. I recently moved and have brought a cutting to my new house, and left some at the old house. Very hardy, vigouous plant with beautiful flowers.
On Jun 11, 2008, scarletblooms from Carbondale, KS wrote:
Many years ago I would see this plant growing along fences in Colby, KS and fell in love with the beautiful yellow blossoms. My aunt told me they were called "Golden Glow" and gave me starts from her yard. Golden Glow is a very old "heirloom" plant, that apparently grew out of favor for many years. I plant it wherever I happen to be living and have given starts to friends. When I lived in Northwest Kansas, I did have to tie the plants to the fence because it was always windy, but I live in Northeast Kansas now and have not had to do any tying. A nursery owner told me once that people only plant "Golden Glow" in their yards when they want to hide something. I told her I grow "Golden Glow" because I think it is beautiful and I love the flowers. The flowers last well as cut flowers, too!
On Apr 19, 2006, NellieLemon from Kirksville, MO (Zone 5a) wrote:
Very tall, very pretty, very hardy, prolific without being aggressive. Very easy to transplant and seems to grow equally well in sun or part shade. Only problem I have, since I live in a very windy area, is that they sometimes need tying up.