>>>>>For the home garden, the species is generally too aggressive to mix with other plants
Dry Shade Comfrey / Large-Flowered Comfrey (Symphytum grandiflorum) is a perennial native to Europe with textured sandpapery green leaves and light yellow flowers. It spreads by creeping rhizomes and forms an attractive groundcover. Foliage is quite dense forming a tight weed resistant covering. Comfrey prefers rich average to moist well-drained soils with part sun to full shade. However, being a tolerant plant, is very adaptable to both dry and moist locations and will grow quite nicely in dry shade. It is not particular as to soil type or pH. and is highly tolerant of urban pollution and will even thrive in inner city environments. There is virtually no maintenance unless you want to mow down the dead foliage in the winter. It is also suggested to deadhead the flowers after blooming as they are not attractive. But if you don't, they will die back on their own and get swallowed up by the foliage. In addition to being a great perennial for your landscape, this comfrey may have herbal uses as well. There are no pest, disease, or browser problems. Considered one of the best plants for solving your most difficult dry-shade landscape challenges. The blue variety, Symphytum grandiflorum 'Hidcote Blue', has more of a blue green foliage and light blue flowers on taller flower spikes. Spread is also more rapid and sometimes to the point of aggressive and rich moist soil. Comfrey is a great underused plant worthy of more wide scale use in the landscape. Dry Shade Comfrey has persisted through over a decade in our Lawrence, KS display garden with no problems.
Rice Paper Plant (Tetrapanax papyrifer) is a hardy tropical with large palmate leaves up to 24" across. In warmer zones and in its native habitat in Taiwan, Tetrapanax is a large shrub or small tree with white flowers produced in the fall. However in our Lawrence Kansas zone 6a climate, Tetrapanax is killed down to the ground each year like crapemyrtles and butterfly bush. A thick mulch is appreciated when young but not needed on established plantings. Tetrapanax is not picky about soils or moisture but will display fastest growth in rich, moist, well-drained areas in full sun. Tetrapanax will also tolerate almost full shade when established. Because it spreads by rhizomes, be sure to allow plenty of space or have control methods in place. Generally, chopping off shoots as they emerge as easy enough. Another word of caution is that Tetrapanax contains a white powdery-like cottony substance on near stems and back sides of leaves. This can cause eye and throat irritation so be careful when cutting back to not rub off the dust (or do so up-wind). Tetrapanax is a very rare plant in cultivation but can also be seen at the Wichita botanical gardens, Botanica. There is a giant form called Tetrapanax papyrifer 'Steroidal Giant' available at Plant Delights Nursery in North Carolina with leaves up to 3 feet wide and less spreading but we have not been able to procure or establish this plant in our Lawrence, KS garden. In our trial gardens in Lawrence, KS (zone 6a), three established mulched specimens of Tetrapanax papyrifer have survived for over 10 years including -17 degrees F in 2021. During that arctic blast of February, 2021, lows down to -17 degrees F on Feb 16th, 2021 were recorded. The longevity of this cold blast was also impressive: 10 days on a row with highs of 10-15 degrees F or lower, 8 nights of lows in the single digits and negatives, and 36 straight hours of 0 degrees F and mostly lower. It can also be grown as a potted patio plant; move into a cold garage or basement over the winter with minimal watering. Allow to go dormant as needed with little care, just cut off dead foliage and place back out in April or May with a time-release fertilizer.
Yellow False Lupine / Lanceleaf Thermopsis, is also known as Thermopsis lanceolata. This plant has beautiful green narrow leaves and black stems on new emerging plants before flowering. Thermopsis lanceolata, the tapered false lupin, is a species of flowering plant in the legume family Fabaceae, native to Russia, Kazakhstan, Mongolia, Nepal and China.
***Tree descriptions available with future update!***
Leatherleaf viburnum is a large semi-evergreen shrub with leathery leaves and cream white flowers. Foliage emerges light green with powdery white material on the backside of the leaf. Foliage darkens to a medium green by summer and finally turning to a purplish winter color. About half of the foliage drops in the winter but is still effective enough for a partial screening. Flowers bloom mostly in spring but sporadically throughout the year. If pollination occurs, red fruits follow in the late summer thru fall creating quite a show. More than one variety is typically required for pollination. Leatherleaf viburnum prefers medium to rich garden soil in full to part sun. Being one of the toughest viburnums around, it can handle much less than ideal conditions including dry shade. Typically our are 40 inches of rainfall per year in eastern Kansas is enough without extra water. However, during times of drought, the foliage will wilt and growth will stop. Luckily the foliage is able to survive in a wilted state for a long time (usually up to two or three weeks) before actually dying. This gives you plenty of notice that it needs water. There is virtually no maintenance except rejuvenation on very old plants. Yearly fertilizer application is appreciated. When given plenty of room to grow, Leatherleaf Viburnum can reach up to 8 or 12 feet tall and wide after 20-30 years. Eventually old canes become unproductive and should be removed allowing young vigorous canes to develop. Leatherleaf viburnum grows slow at first especially in rough soils but the key thing is that it will survive and grow faster when established. Cold hardiness is not a problem in Lawrence Kansas zone 6a but in colder climates expect winterkill down to the ground in some years. Considered one of the best plants for solving your most difficult dry-shade landscape challenges. Several improved cultivars exist. Alleghany Leatherleaf Viburnum (Viburnum x rhytidophylloides 'Alleghany') has improved cold hardiness and growth form.
Leatherleaf viburnum is a large semi-evergreen shrub with leathery leaves and cream white flowers. Foliage emerges light green with powdery white material on the backside of the leaf. Foliage darkens to a medium green by summer and finally turning to a purplish winter color. About half of the foliage drops in the winter but is still effective enough for a partial screening. Flowers bloom mostly in spring but sporadically throughout the year. If pollination occurs, red fruits follow in the late summer thru fall creating quite a show. More than one variety is typically required for pollination. Leatherleaf viburnum prefers medium to rich garden soil in full to part sun. Being one of the toughest viburnums around, it can handle much less than ideal conditions including dry shade. Typically our are 40 inches of rainfall per year in eastern Kansas is enough without extra water. However, during times of drought, the foliage will wilt and growth will stop. Luckily the foliage is able to survive in a wilted state for a long time (usually up to two or three weeks) before actually dying. This gives you plenty of notice that it needs water. There is virtually no maintenance except rejuvenation on very old plants. Yearly fertilizer application is appreciated. When given plenty of room to grow, Leatherleaf Viburnum can reach up to 8 or 12 feet tall and wide after 20-30 years. Eventually old canes become unproductive and should be removed allowing young vigorous canes to develop. Leatherleaf viburnum grows slow at first especially in rough soils but the key thing is that it will survive and grow faster when established. Cold hardiness is not a problem in Lawrence Kansas zone 6a but in colder climates expect winterkill down to the ground in some years. Considered one of the best plants for solving your most difficult dry-shade landscape challenges. Several improved cultivars exist. Darts Duke Leatherleaf Viburnum (Viburnum x rhytidophylloides 'Dart's Duke') features larger dark green foliage, larger flowers, better density, and pink cottony flock on the back of new leaves and new stems instead of white. All Proven Winners® plants are legally propagated, healthy and vigorous, true to name, and tagged with color pictures and growing information.
Leatherleaf viburnum is a large semi-evergreen shrub with leathery leaves and cream white flowers. Foliage emerges light green with powdery white material on the backside of the leaf. Foliage darkens to a medium green by summer and finally turning to a purplish winter color. About half of the foliage drops in the winter but is still effective enough for a partial screening. Flowers bloom mostly in spring but sporadically throughout the year. If pollination occurs, red fruits follow in the late summer thru fall creating quite a show. More than one variety is typically required for pollination. Leatherleaf viburnum prefers medium to rich garden soil in full to part sun. Being one of the toughest viburnums around, it can handle much less than ideal conditions including dry shade. Typically our are 40 inches of rainfall per year in eastern Kansas is enough without extra water. However, during times of drought, the foliage will wilt and growth will stop. Luckily the foliage is able to survive in a wilted state for a long time (usually up to two or three weeks) before actually dying. This gives you plenty of notice that it needs water. There is virtually no maintenance except rejuvenation on very old plants. Yearly fertilizer application is appreciated. When given plenty of room to grow, Leatherleaf Viburnum can reach up to 8 or 12 feet tall and wide after 20-30 years. Eventually old canes become unproductive and should be removed allowing young vigorous canes to develop. Leatherleaf viburnum grows slow at first especially in rough soils but the key thing is that it will survive and grow faster when established. Cold hardiness is not a problem in Lawrence Kansas zone 6a but in colder climates expect winterkill down to the ground in some years. Considered one of the best plants for solving your most difficult dry-shade landscape challenges. Several improved cultivars exist. Red Balloon Leatherleaf Viburnum (Viburnum x rhytidophylloides 'Red Balloon') features significant improvements. In spring, large, lacy white flower clusters cover the plant, followed by green fruit which turns brilliant red in late summer. The thick, leathery foliage lends a distinguished, handsome look to the plant all season. This viburnum will develop some berries without another variety as a pollinator, but you'll get more fruit if planted around 'Mohican' or 'Alleghany.' Proven Winners® plants are legally propagated, healthy and vigorous, true to name, and tagged with color pictures and growing information.
Bluish-green curved leaves from this yucca (Yucca baccata) make an excellent architectural statement. Used as a patio plant in Kansas, place in full sun with no extra watering except from rainfall. Repotting may or may not be needed depending on how large you want the plant to grow. Potted plants are hardy to at least -5 to -15 degrees F if kept dry so you can wait awhile to move these in for the winter. Then move into a cold garage, basement, or bright window over the winter with NO watering. You may also leave this plant outside if under a dry overhang all winter and freeze solid if desired. A suggestion to make this plant a lot more safe around your eyeballs is to clip the new spines off as the new leaves slowly unfurl. It is suggested to buy a large plant to start with as growth is slow. I have never seen this species flower in Kansas, but if it does, the young flower stalks can be cooked and eaten, with the tough outer rind discarded. The fruit can be also be eaten raw or cooked. Yucca baccata occurs in a large area of the North American deserts and exhibits much variation across its range. Yucca baccata specimens we sell are from the higher, mountainous regions of the Rocky Mountains with increased winter hardiness. Having desert heritage, it resents poor drainage and winter moisture. To counteract that in Kansas, plant in full sun on berm or south-facing wall with poor sandy or rocky soil with no irrigation. A large 2-3' wide specimen has flourished in our display garden in Lawrence, KS for over 15 years. It is planted partially under a south facing roof overhang and has survived -16 degrees F and a week of single digit highs in February, 2021. Amazing that a yucca native to areas receiving 4-5" of rain per year can grow in a climate receiving 10 times more rain!
Pale green sword-like leaves from this yucca (Yucca glauca) make an excellent architectural statement with needle-like evergreen foliage. Over time, this yucca will form colonies of evergreen rosettes in its native habitat. Yucca glauca is the most cold-hardy yucca occuring in a large area of the North American great plains and short-grass prairies. The native habitat ranges from Texas to Canada and covers central Kansas predominantly in areas receiving 10-20" of rain per year. Having desert heritage, it resents poor drainage and winter moisture but will usually tolerate normal Eastern Kansas rainfall if planted in full sun on berm or south-facing wall with no extra irrigation. Use is primarily reserved for cactus or xeriscape gardens needing the fine needle-like texture of evergreen foliage and/or where Adam's needle yucca foliage might be too wide. Avoid placing near trees as fall clean-up of leaves can be a problem. Avoid use where children or pets play; needles are sharp and unforgiving! A large 2-3' wide specimen has flourished in our display garden in Lawrence, KS for over 15 years and flowered many times. Flowers are quite attractive and full of medicinal and edible uses for those inclined to learn more. Amazing that a yucca native to areas receiving as little as 10" of rain per year can grow in a climate receiving 40" of rain!
>>>>>are typically grown for their mid-summer flowers and vertical iris-leaf foliage. The plants are temperate and subtropical herbaceous perennial bulbs native to areas with a summer wet season and dry winter. Gladiolus are hardy outside as a perennial when established and with minimal effort at least up to zone 6a. During the growing season, fertilize, water regularly, and plant in full sun. Plant these bulbs in the ground at least 6-8" deep with 3-4" of mulch to enjoy a wonderful tropical flowering effect! Foliage may look bedwraggled by fall so it is ok to cut back foliage at that time. They can also be grown as a flowering summer patio plant. If growing as a potted plant and trying to overwinter, allowing the foliage to frost is ok, it will not kill the root system. However, do not allow the pot with rootball to freeze solid or go below 20 degrees for more than a few hours; move into a cold garage or basement over the winter with no watering. Cut back and allow to go dormant and place entire pot back out in April or May with a time-release fertilizer. Another more labor intensive way to overwinter gladiolus is to remove them from the dirt, dust with fungicide, place in box with sawdust, and keep in the refrigerator. We consider this method old-fashioned and too much work but ok if you only want to save a few bulbs. If digging from the ground in colder zones, just save a big chunk with the dirt intact and place into a large pot in the garage. In a customer's garden in Lawrence, KS (zone 6a), four established specimens planted over 4-6" deep and mulched 2-3" with wood mulch survived -17 degrees F. During the arctic blast of February, 2021, lows down to -17 degrees F on Feb 16th, 2021 were recorded. The longevity of this cold blast was also impressive: 10 days on a row with highs of 10-15 degrees F or lower, 8 nights of lows in the single digits and negatives, and 36 straight hours of 0 degrees F and mostly lower.