Featured Bloom: Stonecrop (Hylotelephium)
Some species of Hylotelephium were previously considered Sedum until scientists used genetic testing to determine they were different. Stonecrop are succulent, late blooming perennials that typically grow to be about 1 foot tall -- while Sedum are generally smaller, creeping plants. These succulent perennials are found in North America, Europe and Asia. They’re heat and drought tolerant, and their small, star-shaped flowers are very attractive to butterflies. There are lots of different cultivars with pink, purple or red flowers. Our most show-stopping cultivars at the Arboretum include ‘Matrona,’ ‘Mr. Goodbud,’ ‘Neon’ and ‘Herbstfreude.’
At the Arboretum, you can find different cultivars of Hylotelephium in the Elizabeth Carr Slade Perennial Garden, Home Demonstration Garden, Tashjian Bee and Pollinator Discovery Center and Spiegel Entrance Garden.
What Else Is Blooming
Garden Mum (Chrysanthemum Mammoth™ 'Red Daisy')
Introduced by the University of Minnesota in 2007, Mammoth™ ‘Red Daisy’ is known for its shrub cushion habit and red petals with gold center. This selection is known to also be frost tolerant.
Prickly Aster (Galatella sedifolia)
A European native, the prickly aster will bloom late in the season, typically September through October. This plant is in the aster family and produces blue rays with a yellow center disk, prefers full sun and tends to grow in a clumping habit.
New England Aster (Symphyotrichum novae-angliae)
Native to eastern North America, this late season flowering aster is a popular perennial with many cultivars. When in bloom, this plant produces deep-pinkish purple ray flowers and a golden center disk. A prevalent self-seeder, this plant can be cut down to the ground after flowering to prevent spreading.
Camphor Weed (Heterotheca villosa)
Blooming from June to October, camphor weed, also known as hairy golden-aster, is native to North America and Mexico. This perennial produces yellow ray florets and is known to be extremely drought tolerant.
Aromatic Aster (Symphytotrichum oblongifolium)
Native to the northeastern and central United States, this perennial blooms in late summer through early fall. When in flower, this plant will produce daisy-like flowers with blue to purple rays and yellow center disks. This plant is attractive to pollinators such as butterflies, and also works well as a cut flower.
New York Aster (Symphyotrichum novi-belgii 'Professor Anton Kippenburg')
‘Professor Anton Kippenburg’ is a dwarf selection of New York Aster that flowers in late summer through fall. The plant will produce flowers in shades of blue to purple that are semi-double. Attractive to birds and butterflies, this perennial is also deer and rabbit resistant.
Sunflower (Helianthus 'Lemon Queen')
‘Lemon Queen’ was given the Award of Garden Merit by the Royal Horticulture Society. Reaching heights of 6 to 7 feet, this perennial provides late season interest with its pale yellow flowers. The plant can bloom for up to 6 weeks, providing a long window of interest in the garden.
An annual favorite among most gardeners, Dahlias are known for their flamboyant display of flowers. Their blooms span the whole spectrum of the rainbow. Grown from tubers, these annuals are highly collectible and provide mid to late summer interest. They are also a huge attraction to pollinators, including butterflies.
Showy Stonecrop (Hylotelephium spectabile 'Herbstfreude')
Blooming in late summer through fall, 'Autumn Joy' is a magnet for pollinators looking for their last source of food for the growing season. When in bloom this plant produces dense displays of star-shaped, pink flowers atop thick succulent-like stems. It works best in a rock garden or along a sunny border.
Hungarian Daisy (Leucanthemella serotina)
Native to parts of Europe and Asia, this perennial is a recipient of the Award of Garden Merit from the RHS. Reaching heights of up to 6 feet, this plant will bloom in the late summer to early fall with bright, white flowers. and golden centers.
Zig-zag Goldenrod (Solidago flexicaulis)
Native to North America, the zig-zag goldenrod is easily identified by its zig-zag stem. While most goldenrods can be found in full sun situations, this goldenrod actually prefers to be planted in shade. Blooming in late summer through fall, this goldenrod will produce vibrant, golden clusters.
Great Blue Lobelia (Lobelia siphilitica)
Related to the cardinal flower, the great blue Lobelia blooms a bright blue in late summer and early fall. This plant grows best in shade, so it works as an excellent addition to a woodland garden. This plant is native to eastern North America.
The Wilson Rose Garden is one of our most colorful collections featuring the pinks, reds, whites and oranges of a myriad of rose species, selections and hybrids.
Smooth Aster (Symphyotrichum laeve)
Smooth Aster is a late blooming, native perennial that is hardy to zone 3. A non-aggressive spreader, this plant is host to the silvery checkerspot and the pearl crescent butterflies. The flowers provide interest with their blue to purple rays and yellow center disks.
Black-eyed Susan (Rudbeckia 'American Gold Rush')
‘American Gold Rush’ is an All-America Selections 2020 winner that was bred at Intrinsic Perennial Gardens, Inc. Compact in habit, this cultivar of black-eyed Susan produces profuse amounts of gold flowers that bloom from summer through early fall.
Windflower (Anemone × hybrida 'Andrea Atkinson')
The Heath Aster is a drought-tolerant plant as it thrives in medium to dry soils. Blooming in late summer through early fall with white ray flowers, this native perennial can be aggressive if left to go to seed. This plant is host to the pearl crescent butterfly.
Showy Stonecrop (Hylotelephium telephium 'Matronna')
‘Matrona’ is a winner of multiple European awards that provides interest throughout the entire growing season. When in bloom, this showy stonecrop produces masses of pale pink flowers that sit atop red stems. Its compact size makes it suitable for rock gardens or sunny borders.
Pink Turtlehead (Chelone lyonii)
Typically growing to heights of two to three feet, pink turtlehead will grow best in light shade and bloom in the late summer to early fall. Native to Eastern United States, this plant will attract butterflies and hummingbirds with its vibrant pink blooms.
Showy Stonecrop (Hylotelephium spectabile 'Neon')
Providing bloom interest in late summer through fall, the ‘Neon’ cultivar of stonecrop produces neon pink flowers. Drought tolerant, this perennial not only attracts butterflies, but also works well in a rock garden setting or along the border of a sunny garden.
Red-stemmed Aster (Symphyotrichum puniceum)
The red-stemmed Aster is a Minnesota native perennial that blooms in late summer through early fall. In its native habitat, it can most commonly be found where the soil is moist such as in a bog, swamp, or in wet meadows. The flowers are purple and butterflies find the plant attractive.
Annual Garden (Assorted plants)
You know that the summer solstice has passed when the Annual Garden at the University of Minnesota Landscape Arboretum is bursting with color. This year, the annual garden is a literal rainbow with flowers ranging all the way from the cool end of the color spectrum to the warm end.
Updated September 21, 2021