The following perennials were picked for their true durability. These are the ones you want for those really tough locations where you want a bit of color whether it be poor soil, high wind or that sunny dry spot. These will thrive with occasional deep watering once a month in cooler periods. and twice a month in the heat of summer.
Hopflower Oregano (Origanum libanoticum)
Plant Select® 2004 Lovely trailing herb 18-24 inches wide by 10-15 inches tall. Lavender and chartreuse bi-color lantern-shaped bracts form throughout the summer months drying to brown in fall. Best suited to raised beds, rock gardens or containers. Plant in well-drained garden loam, clay or sandy soil. This is an eye catcher for all who see it! Oh, and the smell of oregano! Attracts bees to help pollinate your garden. Avoid too much reflected heat.
Bloom Time
Height
Width
Zone
Watering
Sun
Early to late summer
10 to 15 inches
18 to 24 inches
4b
Full Sun to Part Shade
Size
Cost
Premium
$8.00
1 Gal
$15.00
The best gardens seem to have an element of serendipity and the happiest Wyoming gardeners allow themselves to be pleasantly surprised by chance pairings: a fuchsia blossom beside a plant with chartreuse foliage, volunteer groundcover helping a new bed to get established.
Weed control is the gardeners bane in a new garden or one gifted with a yearly supply of windblown seeds! Hand digging does not need to be your only strategy. Glyphosate herbicide, at label dilution, spot applied to weeds with a small sponge paintbrush is effective on most young weeds. Attach the paintbrush handle to a dowel and you’ve eliminated bending over! This direct application means no possibility of herbicide drift to garden plants via our Wyoming breezes.Applying pre-emergent herbicides is a choice for many people to prevent germination of those weed seeds. Apply in early spring before germination begins and repeated per label directions throughout the season to be most effective.
New!2000 GreatPlants!This Great Plains native forms a ground hugging mound 3 feet wide.This one produces sparkling white wine cup blooms.A great contrast to prairie wine cups!
Plant Select 2001. A real eye catcher! It’s vivid green foliage is topped with glowing orange-scarlet flowers from July to frost! Hummingbirds will be drawn to tubular flowers. It is cascading in growth habit, so place it to the front of the garden bed and watch the show. A bit of afternoon shade makes this plant thrive and bloom the most. Natively found on the far west side of Wyoming. Click Here to watch our VIDEO about this great plant!
Plant Select® 1999 This low growing native prairie plant blooms repeatedly during summer in bright burgundy cup-shaped flowers with white eyes on low arching stems with dark green deeply cut leaves. Flowers and foliage are reminiscent of Cranesbill Geraniums on this Poppy Mallow but at less than 1 foot tall and up to 3feet in diameter, the form is not. The only drawback to keeping this darling besides drowning in wet clay is that rabbits munch too much during those years of cottontail population explosions. Plant in soil that drains, or in clay kept on the dry side, taking care to seat the plant at grade and not in a low spot.
Bloom Time
Height
Width
Zone
Watering
Sun
Summer
1 foot
3 feet
4
Full Sun to Part Sun
Size
Cost
Premium
$8.00
"What if we had a drought and our garden plants didn't even know it?" —Panayoti Kelaidis, Director of Education Outreach, Denver Botanic Garden
Red Sunset Trumpet Creeper ( Campsis radicans 'Red Sunset')
New! This vine of the west, especially this cultivar has wonderful scarlet-red trumpet flowers from early summer to autumn! Give this vine room to grow on a wire fence or good trellis - you and the hummingbirds will be happy! The literature is divided as to whether it's zone 4 or zone 5 winter hardy - we think it's so beautiful that it's worth the trial.
Bloom Time
Height
Width
Zone
Watering
Sun
Early Summer to Autumn
20 inches
15 inches
4 or 5
Full Sun to Part Sun
Size
Cost
Premium
$8.00
Rock Clematis(Clematis columbiana tenuiloba)
This is so new it doesn’t even have a trade name except to be called “rock clematis”, a 2006 GreatPlants release.Not every clematis was meant to grow on a trellis.Small, umbrella – shaped flowers of violet and pale blue against rich green foliage is striking!A native of the Rocky Mountains.Excellent in rock gardens or other well drained beds.
Bloom Time
Height
Width
Zone
Watering
Sun
Late May through summer
6 inches
12 to 15 inches
3
Full Sun to Part Shade
Size
Cost
Premium
$12.00
Seafoam Artemisia (Artemisia versicolor)
Plant Select® 2004 Finely filigreed silver-gray foliage gives a frothy appearance on a mound that will spread to nearly 3 feet wide and up to 18 inches tall. Never floppy due to the plants’ woody underpinnings. Wonderful year-round textural accent plant for xeric gardens. Rabbit and Deer resistant. Click Here to watch our VIDEO of Seafoam Artemisia.
Bloom Time
Height
Width
Zone
Watering
Sun
Year round appearance
18 inches
3 feet
4
Full Sun
Size
Cost
Premium
$ 8.00
1 Gal
$15.00
Given our intense sun, wind, and alkaline soil it is easier to be successful at English Cottage, Mediterranean, and Western Prairie Styles than it is with more formal French or Italianate Gardens. Gravel mulched rock gardens are also a good choice.
Create garden windbreaks with shrubs, fences, durable perennials, and grasses so that your "Sunny Garden" perennials can thrive through the intensity of summer. Many are tall grass prairie derived and are accustomed to natural shelter from the brunt of wind and continual beating of summer sun. Just match plants by water need and sun level. That is the way to long life and vigor in the garden. Plan the basics now and if need be tweak it next year. Perennials are forgiving!
Rain Gauge
Throughout this site, the following are used as guidelines for watering established plants:
These plants need regular watering somewhat like a bluegrass lawn so that they never dry to depth in the root system during the active growing season and need occasional winter watering to prevent root dessication and resultant plant death.
These plants are adapted to intermittent deep watering with soil drying to a depth of a few inches between waterings. Watering frequency may be every couple of weeks during the active growing season and maybe only one winter watering for optimal care.
These truly xeric plants can live with our 12 inches of natural precipitation and only need a winter watering during a multi-year drought but they will thrive with a monthly watering. Overwatering will kill some of these.