Share this page Print

YardSmart - Annuals and perennials

Many water-wise plants grow well in Calgary. These plants are drought tolerant and also act as great filters and sponges for rainwater runoff. Learn more about the benefits of water-wise plants in our YardSmart Smarty Plants video.

Water wise plants will need additional water for the first two years. After they are established, you can slowly reduce the amount of water they receive; eventually rainfall will be sufficient throughout most seasons.

Ask your local garden centre about plants that thrive in our unique climate, or download our YardSmart Annuals and Perennials Brochure. We also have more information on what kind of trees and shrubs grow well in Calgary.

Plants native to our region are always a wise choice. Most garden centres carry a selection of native plants and some specialize in native plants. You can find out more about selecting and purchasing native plants through the Alberta Native Plant Council's source list.

Annuals

Annuals, which are intended to last just one season, are a great way to add new colour and diversity to your yard. Below are just a few of the many water-wise annuals you can choose for your pots or plant beds.


Perennials

Perennials are plants that die back to their crown every fall and survive through the fall/winter to grow back the following year. They add lasting beauty and once established, can reduce the amount of work your yard requires. There are a wide variety of perennials that can flourish in Calgary with little irrigation in the summer and can adapt to our winters. See a selection of perennials below or download our annuals and perennials brochure.

 

Alpine Aster (Aster alpines) – A native to Alberta, this low-growing aster with purple-blue or white daisy-like flowers is great for the front of the bed. Allow to self-seed, as the parent plant is not long-lived. Prefers drier lighter soils but will tolerate heavier clay based soil if well drained. Full Sun. Attracts butterflies.

 
 

Bearded Iris (Iris spp.) - A bulb plant that produces flat leaves and flower stalks that bloom mid-May to mid-June. Grows 16-30 inches tall and 10-24 inches wide. Full sun.

Blue Flax

 

Blazing Star or Gay Feather (Liatris spicata) - A native to the prairies with grass-like foliage and upright spiks of purple flowers that bloom from the top down. Butterlies love these plants. Require full sun and average, well drained soils to flourish.

Blue Flax

 

Black-eyed Susan (Rudbeckia hirta) - These cheery plants provide vibrant colour all summer and into fall. They attract butterflies and make wonderful cut flowers for bouquets. They tolerate sun to part shade and poor soil, and grow 18-30 cm.

Blue Flax

 

Blanket Flower (Gaillardia aristata) - This plant, native to the prairies, provides cheery blossoms throughout the summer. It enjoys full sun and will tolerate dry conditions. It requires well-draining soil.

Blanket Flower

 

Blue Flax (Linum perenne) - Slender fern-like stalks rise from compact mounds bearing loads of sky blue flowers. A prolific self-seeder in an un-mulched bed, but it is easy to weed out unwanted plants. Versatile in all soils as long as they are well-drained and blooms best in full sun.

Blue Flax

 

Bluebird Clematis (Clematis macropetala) – A climbing plant with small, blue flowers. Blooms mostly May-June. Can grow up to 10 feet. Prefers a sheltered site with its roots shaded and can tolerate partial shade.

Bluebird Clematis

 

Coral Bells (Heuchera spp.) - Low growing mounds of colourful foliage and slender stalks of delicate pink, red or white flowers make these an attractive plant for the front of the bed. Tolerant of shade and full sun alike, as well as being wind resistant this species with its many cultivars will perform well in all well-drained soils.

Coral Bells

 

Cranesbill (Geranium x) - A number of perennial geranium options are available such as Johnson's Blue or Dwarf Cranesbill. These plants grow clusters of delicate flowers that bloom throughout the summer. Work well in borders. Full sun.

Cranesbill

 

Daylily (Hemerocallis fulva) – Grassy foliage with brownish-orange individual blooms that only last for a day, this species grows well in partial shade to full sun in average soils. Many cultivars are available in a wide range of colour and blooming times throughout the season.

Daylily

 

False-sunflower (Heliopsis helianthoides) - These yellow flowers fill the garden throughout the summer. Drought tolerant and best in full sun. There are many varities that vary in height and shades of colour.

False Sunflower

 

Gas Plant (Dictamnus albus) - Clusters of pink or white flowers with a pungent lemony fragrance in June and glossy dark green leaves make this a great middle of the bed plant for early summer blooming. A slow grower, it has deep taproots that make it drought tolerant when established, and prefers full sun.

 
 

Globe Thistle (Echinops ritro) - A large plant with deeply cut leaves that are silvery-white underneath and stalks with steel blue prickly globes that are a magnet for bees and butterflies in late summer. With a deep branching tap root system the species is best in full sun in average, well-drained soils, but also tolerates light shady spots.

Globe Thistle

 

Harebell (Campanula rotundifolia or carpatica) - Provides mounded clumps or shoots of purple bell-shaped flowers that bloom all summer. Full sun to part shade. Do not confuse with creeping bellflower which is aggresively invasive.

Harebell

 

Hens and Chicks (Sempervivum spp.) – Succulent rosettes with the parent plant being the hen, which dies after flowering, and the new growth chicks taking over. A great groundcover for a dry area with full sun and well drained soil.

Blue Flax

 

Iceland Poppy (Papaver nudicaule) – A self-seeding poppy with slender stems and paper thin flowers in orange, yellow and cream that bloom freely throughout the growing season. Remarkably drought resistant in full sun and thrives in all soil conditions.

Iceland Poppy

 

'Jack Frost' Brunnera (Brunnera macrophylla) – A showy plant with large silver and green plants and tiny purple-blue flowers in late spring. Prefers shade.

Jack Frost

 

Lamb's ear (Stachys byzantina) – A silver-blue plant with soft, fuzzy foliage. Purple spiky flowers from July-August. Grows 6-8 inches tall and 24 inches wide and likes full sun.

Lamb's Ear

 

Lungwort (Pulmonaria officinalis) – These shade-loving plants provide striking foliage and colur to dark areas in the garden. Tiny pink flowers appear in the spring. These low growing plants are a good choice for challenging dry, shady areas.

Lungwort

 

Pasque Flower (Pulsatilla vulgaris) - A deep-rooted relative of our Prairie Crocus (P. Patens), this feathery leaved species with purple petals and yellow centers is often in bloom in early spring. Preferring average well-drained soils it will perform well in partial shade as well as full sun.

Pasque Flower

 

Peony (Paeonia cvs.) - Long lived durable species for the back of the bed or as a specimen plant in a variety of single or double flowers ranging from white through maroon. Thick and deeply rooted these plants flourish in all soil types that have good drainage. Part to full sun.

Peony

 

Purple Cone Flower (Echinecea purpurea) - A native of the western United States, this species has a central brown cone fringed with deep pink-purple petals on tall stalks. It has a fine network of shallow roots that enable it to gather available moisture. Adapted to all soil and light conditions excepting deep shade, this versatile plant for the middle of the bed is a great butterfly and bee attractor.

Purple Cone Flower

 

Russian Sage (Perovskia atriplicifolia) - An airy sub-shrub for the back of the border with long stems covered in lavender blue flowers in late summer. While usually forming a neat clump, older plants may become invasive and need to be kept under control. Prefers full sun in dry soil.

Russian Sage

 

Sea Holly (Eryngium spp.) - A thistle-like plant for the middle of the bed, with steel blue prickly flowers rising from a base of shiny leaves. All species have thick taproots and thrive in dry average soils. Like most blue flowering plants butterflies are attracted to this species. Full sun, Well drained average soil.

 
 

Sea Lavender (Limonium latiflora) - An excellent substitute for Baby's Breath, also known as Statice, with fronds of delicate lavender flowers in late summer. Requires well drained soils in full sun to perform well, and is drought tolerant due to its deep taproot.

Sea Lavender

 

Silver Mound Artemisia (Artemisia schmidtiana 'Silver Mound') – Feathery mounds of silver gray foliage, with a pungent sage-like smell meant only for the front of a sunny bed with well-drained soil.

Silver Mound

 

Speedwell (Veronica teucrium 'Crater Lake Blue') – Compact plant for the middle of the bed that is covered in bright blue flowers in June. The plants spread to form a nice clump, are easy to divide, and may need support. Prefers fertile, but well drained soil in full sun.

Speedwell

 

Stonecrop or Sedum (Sedum spp.) - A large group of succulent plants ranging from low groundcovers through tall upright cultivars. 'Autumn Joy' is a staple for the fall bed with stiff stems topped with rose coloured florets, but there are many new cultivars on the market to incorporate into your garden. Part shade to full sun, well drained light soil.

Sedum Stonecrop

 

Yucca (Yucca glauca) - A native of southern Alberta that features stiff sword-like grey-green leaves with creamy-white bell shaped flowers. Extremely drought resistant and reliable if planted in well-drained sandy loam in full sun. Groundcovers (Herbaceous)

 
 

Perennial Groundcovers

Basket-of-Gold (Aurinia saxatilis 'Compactum') - This species forms low growing mounds with small grey-green leaves covered with bright gold flowers in early summer. It is great in rock gardens or the front of the bed, and requires dry soil conditions to show at its best.

Basket of Gold

 

Bearberry or Kinnikinnick (Arctostaphylos uva-ursi) - A native ground cover with round evergreen leaves and delicate flowers in the spring and red berries in the fall. Full sun to light shade.

Bearberry

 

Creeping Jenny (Lysimachia nummularia "Aurea") - This is an excellent spreading groundcover for shady spots and trails nicely over rocks or walls with yellow flowers in midsummer. It does best in partial shade but will tolerate sun and shade as well. It is good for moist locations and a good plant to take advantage of rainwater runoff. It does spread but can be easily picked back by pulling stems out. Helps attract bees to the yard.

Creeping Jenny

 

Maidens Pink (Dianthus deltoides) - This species forms dense mats with fibrous roots and tiny, dark green leaves covered in bright red flowers on small stalks in mid-summer. An easy, self-sowing plant, the spaces between flagstones will quickly fill in. It requires well-drained soil and full sun for best flowering, but will tolerate light shade and even grow beside spuce trees.

Maidens Pink

 

Mother-of-thyme (Thymus serpyllum) - This species forms an evergreen mat with tiny purple-pink clusters of flowers in mid-summer and spreads by creeping stems. Try to keep covered with snow over winter to prevent browning of the tiny leaves that turn dark purplish-green in fall. Average to dry soil. Prefers a dry sunny location - does well in sun to partial shade cast by spruce trees, along walkways and rock gardens.

Mother of Thyme

 

Pussytoes (Antennaria diocia) - A praries native, this species with tiny, silvery leaves forms low mats that readily interweave with other plantings. Short stalks of rose pink flowers come in mid-summer. It performs well in all well-drained soil types, and will tolerate partial shade, but prefers full sun.

Pussytoes

 

Snow in summer (Ceratium tomentosum) - Mats of silver-green leaves and bright white flowers in early summer are a great filler. It forms extensive fibrous root systems, so is prone to spreading into places it shouldn't go. It is, however, contained well, even under spruce trees, and does well in most well-drained soils. Full sun to partial shade.

 
 

Perennial Ornamental Grasses

Blue fescue (Festuca ovina var. glauca "Elijah Blue") - These low growing clumps of fine, wiry, blue-grey blades have tan coloured seed spikes that can be removed or left onto provide winter interest. They require well-drained soil to flourish. Prefers full sun, but tolerates partial shade.

Blue Fescue

 

Blue oat grass (Helictotrichon sempervirens) - This species is a large, clump-forming evergreen grass with blue leaves and tan seed heads held on tall stems. It flourishes in growing conditiions similar to that needed by blue fescue. It prefers well-drained soils. Partial to full sun.

Blue Oat Grass

 

Karl Foerster feather reed grass (calamgrostis x acutiflora "Karl Foerster" - These compact, green-leaved clumps have tall wheat-like seed heads that persist through the winter. This grass does well in all soils, but thrives in clay. Partial to full sun.

Karl Foerster Feather Reed Grass