In our winter hardiness trials, Abutilon 'Bartley Schwarz' (named after the late California plantsman, although incorrectly spelled "Schwartz") has been one of our best performers. The slightly pendent branching habit of this Abutilon megapotamicum hybrid makes a 4' tall x 4' wide clump clothed with small, fuzzy green serrated leaves and adorned from early summer through fall with 1.5" wide, salmon-orange (RHS 24B) bell-shaped flowers that dangle from the outstretched woody branches. As a houseplant, this mallow relative is everblooming (should be the same in an apartment)...just watch out for hummingbird droppings. Pot Size: 3.5" (24 fl. oz/709.77 ml)
Abutilon 'Canary Bird' is a marvelous hummingbird plant that has survived 6 degrees F in our garden. This hibiscus relative has maple-like foliage on a compact 6' tall x 3' wide plant. For us, Abutilon 'Canary Bird' starts flowering in early summer with large, dangling, 3" wide, canary yellow, bell-like flowers and continues until the first frost. For those in more northerly zones, Abutilon 'Canary Bird' makes a great centerpiece for a container planting. Good winter drainage is key for maximum cold tolerance in the ground. Pot Size: 3.5" (24 fl. oz/709.77 ml)
Abutilon 'Fool's Gold' is an upright abutilon, clothed with 2" wide, fuzzy green leaves and adorned from early summer until fall with 2.5" wide, hanging, orange (RHS 24B) lantern-like flowers, each highlighted with dark orange veins...a hummingbird delight. This 4' tall x 2.5' wide flowering maple has proven to be reliable in our climate since 2004, but is also a great summer container specimen plant. Pot Size: 3.5" (24 fl. oz/709.77 ml)
Abutilon megapotamicum is a fun and easy-to-grow Brazilian native that makes a great hummingbird magnet for the perennial border, spreading to several feet wide in a single season. If you're into container gardening, a flowering maple also makes a great hanging basket plant. In the wild, Abutilon megapotamicum reaches 8' tall, but in temperate climate cultivation, it rarely exceeds 5' tall. From late summer until frost, the plants are laden with very cool 2" hanging red lanterns, carefully placed between the thumb-sized green leaves. Pot Size: 3.5" (24 fl. oz/709.77 ml)
This vigorous hummingbird favorite makes a 5' tall x 5' wide upright mass of woody stems adorned with fuzzy, dark green leaves. During the summer, the outermost branches are laden with dangling parchment-yellow flowers, each highlighted by a dark red calyx. This has been a superb performer in our winter hardiness trials. Although we list this as a selection of Abutilon megapotamicum, its vigor and leaf shape suggest its baby-daddy is instead a close relative. Pot Size: 3.5" (24 fl. oz/709.77 ml)
I longed for an abutilon with pastel flowers and plantsman Luen Miller of Monterrey Bay Nursery came to the rescue with this fabulous selection of Abutilon megapotamicum. The 3' tall x 4' wide clump of Abutilon 'Pink Charm' is adorned from early summer until fall with small pink dangling bells that line the stem...simply charming for both the gardener as well as nearby hummingbirds. Pot Size: 3.5" (24 fl. oz/709.77 ml)
Thanks to Luen Miller of Monterrey Bay Nursery for sharing his splendid 2005 introduction...a hybrid of Abutilon megapotamicum. The 3-4' tall mass of stems is adorned with pointed green leaves and, from early June until fall, with hundreds of dangling bell-shaped flowers. The flowers are clear orange, highlighted by red bloodshot eye-like veins. Each flower is held tight by a dark burgundy calyx (the thing the flower sits in). Abutilon 'Orange Hot Lava' has been a standout in both our summer flowering and winter hardiness trials. Nine out of 10 hummingbirds agree, Abutilon 'Orange Hot Lava' is a top choice! Pot Size: 3.5" (24 fl. oz/709.77 ml)
This Jon Dixon hybrid has been an amazing performer in our garden trials. Not only did Abutilon 'Voodoo' continue flowering into the upper 20s, but it kept green stems and leaves down to 20 degrees F. Abutilon 'Voodoo' makes an upright 6' tall x 3' wide clump, adorned, starting in late summer and continuing into late fall, with large 2", blood red, bell-shaped flowers dangling from the top half of the plant. This hummingbird favorite is one of the best performers of the large-flowered, upright flowering maples we have ever grown. Pot Size: 3.5" (24 fl. oz/709.77 ml)
This marvelous native of Cuba ("Coober" to us Southerners) has long been prized for containers and hanging baskets, but no one ever tried it for winter hardiness. Imagine our surprise when in the mid '80s it survived 0 degrees F. Since then, Acalypha pendula has been one of our favorite summer flowering perennials. The 8" tall x 2' wide clumps of small, fuzzy green leaves are adorned all summer with 5-7" long, trailing, fuzzy red cattails. If you can't afford to buy a red cattail plant, stir a can of red paint with your cat's tail for the same effect, but watch the claws. If you're in the North, Acalypha pendula is still great for hanging baskets and summer containers...simply delightful! Pot Size: 3.5" (24 fl. oz/709.77 ml)
Although some taxonomists have lumped Acanthus hungaricus into Acanthus balcanicus, we feel that there is a horticultural difference. Picture a tropical-looking, dark green, glossy, thick-leaf fern forming an 18" tall x 30" wide deer-resistant perennial and you've got an acanthus. Acanthus balcanicus v. hungaricus is topped in early spring with a 3' tall spike composed of purple, pink and white tricolor turtleheads...very unique! Plant this where you want it to stay. While it is easy to move, small root pieces that are left behind keep on giving and giving and giving... Pot Size: 3.5" (24 fl. oz/709.77 ml)
This charming little bear's breech suffers from a major identity crisis. Some "experts" consider Acanthus caroli-alexandri a form of Acanthus hungaricus, while others propose a possible hybrid between Acanthus spinosus and Acanthus hirsutus. Don't you just love those taxonomists? Regardless of its identity, Acanthus caroli-alexandri is unique among acanthus with its finely cut, black-green, deer-resistant foliage, making a small 18" tall x 2' wide rosette. In late spring, the clumps are topped with compact 3' tall spikes with the typical hooded, white-and-purple, spiny flowers...outstanding for texture and structure in the small garden. Pot Size: 3.5" (24 fl. oz/709.77 ml)
This delightfully saucy acanthus has paraded in the trade for years as Acanthus spinosus, but is nothing like that species...i.e., it's missing the spines. It appears perfectly intermediate between Acanthus hungaricus and Acanthus spinosus and is probably a hybrid, hence we have assigned a cultivar name commemorating its widespread culture in Holland under the wrong name. The 1' tall x 2' wide mass of deeply incised, black-green, deer-resistant leaves makes a wonderful clump topped in late spring with 2' tall spikes of white flowers hidden by spiny purple hoods. Sunny, slightly acid to alkaline conditions are best and be aware that unlike vasectomies, cutting the translocation system (roots) causes more babies. Pot Size: 3.5" (24 fl. oz/709.77 ml)
In 2011, while Israeli nurseryman Moti Kopilovitch was visiting and discussing our acanthus selections, I explained that most Acanthus mollis we tried did not survive our hot, humid summers. Moti was kind enough to share seed of a form that thrives in Israel's hot, zone 10-11 climate and we are thrilled to share the plants with you. We planted several of this Acanthus mollis in the ground to watch, so we'll all grow them for the first time together. Acanthus mollis makes a 2' tall x 3' wide clump of broad, glossy-green, deeply indented leaves that goes into a midsummer lull but kicks into high gear with the return of cooler nights. The clumps are topped with 4' tall spikes of spiny purple and white flowers. Acanthus is propagated from root cuttings, so if you dig around a mature acanthus, you will create cuttings. Pot Size: 3.5" (24 fl. oz/709.77 ml)
I spent years lusting after the breathtaking variegated Acanthus 'Tasmanian Angel', so finally, not only do we have it, but we have enough to share. This unusual selection of the European Acanthus mollis comes via a gardener in Tasmania. The bold-textured, dark green leaves with deeply scalloped edges are highlighted by an irregular border that emerges creamy gold, then changes to white as the leaves mature. The older leaves eventually lose most of the coloration. When the 3' wide deer-resistant clumps mature, they are topped with 5' tall spikes of true pink flowers...simply stunning! Acanthus 'Tasmanian Angel' must have some sun to survive...also a rich, moist soil is preferred. Bear's breech is an evergreen perennial at the southern end of its range. Pot Size: 3.5" (24 fl. oz/709.77 ml)
Acanthus 'Morning Candle' is a new free-flowering selection from Holland's Dirk de Winter of New Generation Plants, that is reportedly a hybrid of Acanthus spinosus and Acanthus mollis. Unfortunately, most growers wouldn't know true Acanthus spinosus if it stuck 'em in the rear. We think this is more likely an Acanthus hungaricus x Acanthus mollis hybrid. For us, the 3' wide clump of deeply-scalloped green leaves has performed extremely well despite several weeks above 100 degrees F. The compact deer-resistant clumps are topped, starting in early May (NC), with 4'+ tall flower spikes of purple and white hooded flowers...very nice! We've found Acanthus 'Morning Candle' to still be free-flowering, despite all the new EU austerity measures. Pot Size: 3.5" (24 fl. oz/709.77 ml)
We feel this import by Oregon's Chet Tompkins from a gardener in China is the finest acanthus on the market. Acanthus 'Summer Beauty' is a hybrid (probably Acanthus mollis x Acanthus spinosus) that grows well in our hot summers where Acanthus mollis fails miserably. The 4-6' wide clump of giant, glossy, dark green foliage is much more cutleaf than Acanthus mollis. In summer, the tropical-looking, deer-resistant clumps are topped with 6' tall spikes of white flowers surrounded by wonderful purple calyces...absolutely superb, and soon to be an industry standard! Pot Size: 3.5" (24 fl. oz/709.77 ml)
Anthea yarrow is a 1993 introduction...a discovery by the late Alan Bloom of England, who found it growing in a patch of Achillea 'Moonshine'. Achillea 'Anblo', marketed under the equally strange name 'Anthea', is a noticeable improvement over most of the yarrows we have tried...it actually survives here without trying to take over the garden. The basal rosette of cutleaf silvery foliage is topped in late spring with very erect 30" stalks, holding nice flower clusters of light butter yellow. This is a great addition to the softer colored parts of the border. Pot Size: 3.5" (24 fl. oz/709.77 ml)
We've tried many yarrows through the years and most have struggled through our hot humid summers, with the exception of Achillea 'Strawberry Seduction'. This Achillea millefolium hybrid (possibly with Achillea clypeolata) was selected in 2001 by Holland's Michiel Zwaan, who bred it from the Achillea Summer Pastels seed series. Achillea 'Strawberry Seduction' is a long-flowering selection that begins flowering in June with strong 2' tall well-branched stems, topped with clusters of colorfast red flowers, highlighted with small yellow centers. I've experienced strawberry reductions before, but admit that I find the imagery of a strawberry seduction...berry interesting. Pot Size: 3.5" (24 fl. oz/709.77 ml)
We have trialed a number of achimenes for winter hardiness and are always thrilled when we find another cultivar to add to our list. Achimenes 'Harry Williams' was a delightful surprise when it returned in great shape after a winter low of 8 degrees F. Emerging in June, the fuzzy green foliage adorns short stems, topped in summer with beautiful pansy-shaped flowers that emerge crimson red then morph to crimson violet, both with a contrasting yellow throat. Pot Size: 3.5" (24 fl. oz/709.77 ml)
Acorus calamus 'Variegatus' is an aroid relative and former member of the "family" before being ousted by the molecular taxonomy mob. Acorus calamus is now in the horticulture protection program disguised as a dramatic, upright deciduous iris. The vivid white and green banded, deer-resistant leaves of Acorus calamus 'Variegatus' make this one of the most strikingly beautiful vertical accent plants in the garden! Variegated sweet flag spreads slowly by means of a very thick above-ground rhizome. Sweet flag loves a moist spot such as a bog but will also grow in ordinary garden soils...a real easy-to-grow, carefree prize! Pot Size: 3.5" (24 fl. oz/709.77 ml)