Native Plants - S

Senecio congestus
Marsh Ragwort
Aster family – Asteraceae/Compositae

Robust showy annual or biennial with thick hollow stems and finely divided leaves.
Leaves, stems and flowers wooly-haired.
Flower heads are a dense, tightly packed cluster of yellow daisy-like flowers, each flower
1 to 2 cm across.
Seed heads fluffy and white.
Found on lake shores, marshes, sloughs and muddy places where the water has retreated but the soil is still damp.

Bloom time: May - June
Height: 30 - 60 cm (12 - 24 inches).
Growing conditions: Sun; damp to wet soil.
Sisyrinchium montanum
Blue-eyed Grass
Lily family - Liliaceae

Short, slender tufted perennial with narrow grass-like leaves and clusters of violet-blue flowers.
Flowers approx.1 cm across. Can be seen in damp meadows and the edges of sloughs.

Bloom time: June, July
Height: 10 - 30 cm (4 - 12 ")
Growing conditions: Full sun to semi-shade; poor to moderately fertile clay soil.
Solidago canadensis
Canada Goldenrod
Aster family – Asteraceae/Compositae
Solidago missouriensis
Low Goldenrod
Aster family – Asteraceae/Compositae

Low Goldenrod is rare within Edmonton, but it can readily be seen in natural areas outside the city limits. It grows in dry prairies and on slopes and hillsides. One of the smallest of the goldenrod species, it blooms earlier and is smaller and more manageable than the other local goldenrods.

Bloom Time: July, August
Height: 15 cm - 40 cm (6" - 16")
Sun; average well-drained soil
Attracts birds and butterflies

Low Goldenrod is easy to grow from seed, but the germination rate is poor, so plant more seeds than you need. Sow the seeds directly into the garden in late fall because these seeds need a cold, damp period before they will germinate.
Solidago rigida
Stiff Goldenrod
Aster Family - Asteraceae/Compositae

Very attractive with its large, flat-topped clusters of golden-yellow flowers. Its advantage is that it will grow into a nice clump, but it won't spread aggressively.
Attacts birds and butterflies.

Bloom time: August, September
Height: 45 cm - 75 cm (18" - 30")
Sun; any type of soil, from rich to poor, wet to dry.

Stachys pilosa = S. palustris
Marsh Hedge-Nettle
Mint family - Lamiaceae
Symphyotrichum ciliolatum = Aster ciliolatus
Lindley’s Aster
Aster family – Asteraceae/Compositae

Bloom time: August and September
Ht: 30-60 cm (12-24")
Semi-shade to full sun; average soil

Sow in late fall, or stratify. Cover seeds lightly. Aster seeds have a low germination rate, so plant lots. You can always thin them out later. Sow the seeds directly into the garden in late fall and they will germinate in the spring. These seeds need a cold, moist stratification before they will germinate.
Symphyotrichum ericoides var. pansum = Aster ericoides
Tufted White Prairie Aster
Aster family – Asteraceae/Compositae

In bloom, it is a mass of tiny, white, daisy-like flowers that almost cover the whole plant. Will expand into a large patch, but is not aggressive. Asters are important plants for insects, including our native butterflies, which use them both as a nectar source and as food for their caterpillars. May sprawl.

Bloom time: August, September
Ht: 30-60 cm (12-24")
Sun; any soil.

Sow the seeds directly into the garden in late fall and they will germinate in the spring. If starting indoors, moist cold stratify for 2-4 weeks.
Symphyotrichum laeve = Aster laevis
Smooth Aster
Aster family - Asteraceae/Compositae

Blooms through early fall frosts and provides late-season colour to the garden. Very hardy and easy to grow. Once established, will quickly expand into a large clump. It is not aggressive but it does self-seed freely, providing you with plenty of plants each year. Attracts butterflies.

Bloom time: August, September
Ht: 45-100 cm (18-40")
Sun; any soil.

Smooth Aster seeds have a low germination rate, so plant lots. You can sow the seeds directly into the garden in late fall. If starting indoors, moist cold stratify for 2-4 weeks.
Symphyotrichum puniceum = Aster puniceus
Purple-stemmed Aster
Aster family - Asteraceae/Compositae

Sturdy and showy wetland aster that also adapts well to garden conditions. Self-seeds a little. Like all asters, attracts butterflies. Flowers range from pale to deep purple.

Bloom time: July – August
Ht: to 90cm (3 ft)
Prefers sun; will tolerate some shade.

Aster seeds have a low germination rate, so plant lots. You can always thin them out later. Sow the seeds directly into the garden in late fall and they will germinate in the spring. These seeds need a cold, moist stratification before they will germinate.