I remember the first time I saw an ironweed in a garden: It seemed impossibly tall, but the high crown of purple flowers aflutter with butterflies and bees mesmerized me, and it was love at first sight. The 9-inch-long, grayish green leaves are impressive in size, and a hint of purple in the topmost ones and stems is a nice treat. But since that first glimpse, I’ve rarely encountered ironweeds in cultivated landscapes. The 5-inch-long, linear leaves are dark green and especially lovely; as a bonus, they are resistant to powdery mildew and rust. Sun: Full Sun, Part ShadeMoisture: Medium, Medium-WetHeight: 6 feetBlooms: July, Aug, SeptColor: PurpleSpacing: 2-3′Zones: 3-9Benefits: Butterflies, Pollinators, Deer Resistant. You’ll find that better garden centres now offer ironweeds (V. lettermannii ‘Iron Butterfly’ is becoming particularly popular), but if you can’t plants locally, try mail order sources. New York ironweed had the distinction of remaining rust free during our trial—an attribute shared only with narrowleaf ironweed. The origin of the botanical name, though, is known: it honours William Vernon, a British botanist who collected plants in Maryland in 1697 and 1698… and brought back the first ironweeds to Britain.
As a result, you pretty much have to start these under artificial lights, such as fluorescent or LED plant lights, and in the warmest part of your home. Richard Hawke is plant evaluation manager at the Chicago Botanic Garden. From early to midfall, deep purple flowers are plentiful on long, flowering branches—a unique trait of this cultivar.
The new year has barely begun, yet now and over the coming month it’s already time to start certain seeds indoors. Here are 100 plants that germinate best with a cold treatment (there are thousands of others!). Since 1988, THE source for buying native, rare, and unique perennials. They reach about 18 to 30 inches (45-75 cm) in height and diameter, depending on the cultivar, but have more finely cut leaves than garden mums and certainly don’t form the dense mounds typical of cushion mums. ), Many tree, shrub and perennial seeds need a cold treatment before they will germinate. If you choose to sow it indoors, after sowing, place the pots in a sealed plastic bag and refrigerate for 2 months, as they need a period of cool temperatures and moist soil conditions in order to stimulate germination. For such a large plant, I expected a much bigger flower, but, at half an inch wide, the purple-violet flower heads are among the smallest. of the member-only content library. Leaf size enhances the bigness of some ironweeds; for example, giant ironweed tops out at 8 feet tall, but the 10-inch leaves make it seem even larger.
Its dark green, willow-like leaves are wider, so the unknown parent certainly had broader leaves. On the other hand, giant ironweed (Vernonia gigantea) is the tallest species and has been known to grow up to ten feet. Clusters of finely petaled flowers, in dense clusters, top a 5-7’ clump-forming plant. Dwarf Crested Iris : Price: $ 10.95. This tall grass (Miscanthus sinensis) is very popular, grown for its arching green ribbon-shaped leaves that become straw-colored in fall and its blooms that start pinkish to become silver-white as fall progresses. S. ‘Autumn Fire’ is similar, but more compact (20 inches x 18-24 inches/50 cm x 45-60 cm). To reduce plant size, cut back new stems by half in late spring; in our trials, plants were up to 18 inches shorter when sheared. We haven’t grown it long enough to achieve full size, but it is estimated to reach 6 to 8 feet tall and 3 to 4 feet wide. Narrowleaf ironweed (V. lettermannii) breaks most of the ironweed rules. Join Fine Gardening in upcoming webinars. I always assumed ironweed got its name because its tough stems never flop. This is a very durable, naturally short growing specie. Hardiness Zone: 4 - 8. and cvs, Zones 4 to 9), but its attractive, lance-shaped leaves—rough on the surface and softly hairy on the underside—are not whorled like its cousin’s. Sun or partial shade. Ironweed is a tall, strong flower that is best planted in small groups or scattered individually in the middle or back of rain gardens or shoreline restorations. The fact is no one knows why early North American colonists gave this plant its common name. Plants tend to grow taller in moist soils, although some are drought tolerant once established. Its domes of pink flowers are perched atop stems that can reach heights of eight feet. Imagine my delight when the flowers opened pure white in late summer! will continue to bloom right through the fall, even sailing through the first light frosts. Unless your local merchant is a specialist in ornamental grasses, you won’t be warned about this fact, so research your plants ahead of time. ‘White Lightning’ is a seed strain developed by Jelitto Perennial Seeds, and it blooms the first year from seed. Unlike other ironweeds, the longer branches form an interlocking network that holds the stems upright on even the windiest days.
It has a very wide distribution in nature, throughout the eastern half of the US and into Ontario. Selected from trials led by Dr. Allan Armitage at the University of Georgia and introduced by North creek Nurseries. "As a recently identified gardening nut I have tried all the magazines and this one is head and shoulders above the pack. However, just because they are sold locally doesn’t mean they are hardy in your region. In an objective trial, there should be no favorites, but Missouri ironweed (V. missurica) was mine. Easy, colorful and tough-as-nails, ironweeds deserve a place in every garden! Next to its giant cousins, ‘Southern Cross’ is almost a dwarf—expected to be only 4 feet tall and wide. Think again! Chrysanthemum × morifolium Firecracker series, Chrysanthemum × morifolium Mammoth Red Daisy, Chrysanthemum × morifolium Mammoth sseries, Chrysanthemum × morifolium My Favourite series, Chrysanthemum × rubellum 'Duchess of Edinburgh'. Source: worldartsme.com, rdkate.blogspot.ca & mzayat. In full sun, ‘Iron Butterfly’ is so compact, it looks sheared; in partial shade, the tightness is not as pronounced.
© 2020 The Taunton Press, Inc. All rights reserved. Of all the ironweeds in the trial, it was the gangliest in its youth, although over time it develops a strong bushy habit. They do fine in the richly amended soils of most gardens, but won’t fuss if you plant them in plain old “dirt”. The Morden and Minn mums are dwarf plants (12-18 inches x 18-24 inches/30-45 cm x 45-60 cm) covered with flowers from September to frost, while the Mammoth series mums are taller and wide: 3 to 4 feet (100-120 cm) tall and wide. In a large space, silvery gray–leaved ‘Skywalker’ Indian grass (Sorghastrum nutans ‘Skywalker’, Zones 4 to 9) is a beautiful companion to giant ironweed. North American fields and forests are full of wild asters in shades of violet and white, but there also are many cultivated asters to be discovered, including New England asters (Aster novae-angliae, now Symphotrichum novae-angliae) and New York asters (A. novi-belgii, now S. novi-belgii). In zone 7 and above, maiden grass can self-sow and become invasive due to overseeding, so look for near-sterile varieties like ‘Autumn Light’ and ‘Morning Light’ as well as any of the variegated cultivars, as they almost never bloom. Zone 3. blog. blog. Germinate the seedlings under glass, possibly over a heating pad, as above. We haven’t grown it long enough to achieve full size, but it is estimated to reach 6 to 8 feet tall and 3 to 4 feet wide. Great for rain gardens and large gardens with moist soil.
i’ve been growing ironweed for a number of years now, first New York ironweed (Vernonia noveborecensis), at the time, the most widely available species, then others.
I've read where Prairie Ironweed leaves undersides can exhibit a habit of pitting; more or less a lot of dark dots. They’re essentially annuals in most gardens. Fall asters are hardy to zone 4, sometimes in zone 3. Light: Intermediate Soil: Average Height: 3 to 8 inches Blooms: April Flowers: blue to pale blue with yellow crest.
Height: 36 in Photo: F. D. Richards, flickr. This proclamation got me thinking differently about these imposing natives. Self-seeding can be mitigated by removing some of the flower heads before they go to seed. All have the same fuzzy purple flowers and are best told apart by their height and foliage characteristics. It was a small way to say thank you for the efforts…. So far, the dark green leaves have been rust free, but powdery mildew has been troublesome at times. Their bitter-tasting leaves are not palatable to most mammals, including deer, but rabbits occasionally browse narrow-leaf ironweed and ‘Plum Peachy’ tall ironweed.
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