Michaelmas Daisy Seeds, Aster amellus Flower Seeds
Symphyotrichum novi-belgii • Asteraceae • Native to Eastern North America
Grow Michaelmas Daisy Seeds, Aster amellus for colorful blooms in home gardens. Ideal for borders, pots, pollinator beds, and cut flower displays, with fresh seed packs for easy seasonal planting.
Plant Name: Aster Seeds
Quantity: 100 Seeds
Selected: Aster Seeds / 100 Seeds
Germination depends on soil, temperature, moisture, and care. See our return policy for details.
At a glance
Michaelmas daisies are prone to powdery mildew in poorly ventilated spots, so always plant them where air can circulate freely and avoid wetting the foliage when watering.
Botanical profile
Meet the Michaelmas Daisy
Step-by-step planting
Growing from perennial aster seeds is straightforward once you understand what the seed needs at each stage, and the steps below will walk you through the process from packet to garden bed.
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1
Timing Your Sow
Start aster novi-belgii seeds indoors 8 to 10 weeks before your last expected frost, or direct sow outdoors in early spring when soil temperatures are consistently reaching 60 to 65 degrees Fahrenheit.
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2
Light Stratification
While not strictly required, placing your Michaelmas daisy seeds in a damp paper towel inside a sealed bag in the refrigerator for 2 to 4 weeks before sowing can improve germination consistency, particularly in warmer climates.
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3
Sowing the Seeds
Press seeds lightly onto the surface of a moist, well-draining seed-starting mix and do not cover them deeply, as aster seeds germination is aided by light, so a very thin dusting of vermiculite is enough.
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4
Moisture and Warmth
Cover the tray with a humidity dome or plastic wrap and keep the mix evenly moist but not waterlogged, aiming for a soil temperature around 65 to 70 degrees Fahrenheit to encourage steady sprouting.
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5
Transplanting Seedlings
Once seedlings have two sets of true leaves, pot them up into individual cells or small pots and grow them on in bright light before hardening them off outdoors over 7 to 10 days.
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6
Choosing a Planting Site
Plant out in a sunny spot with at least 6 hours of direct sun and reasonably fertile, well-drained soil, as Michaelmas daisy care becomes much simpler when the site conditions suit the plant from the start.
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7
Pinching for Bushy Plants
Pinch the growing tips back once or twice before midsummer to encourage branching and a more compact, floriferous plant rather than a tall, floppy one.
Year-round care
Spring
- Sow after last frost
- prepare soil with compost
Summer
- Water regularly
- feed monthly
Fall
- Harvest before frost
- store well
Winter
- Rest
- store seeds cool and dry
Full specifications
Shipping
- Orders are delivered within 8 to 16 business days.
- All orders include tracking.
- Free shipping on all orders.
- Seeds are packed in moisture-resistant, resealable foil packets.
Germination
Germination rates vary depending on climate, soil conditions, and care. Seeds perform best when planted in the right season at the correct temperature, with consistent moisture and adequate light. We take quality seriously and each batch is tested before packaging. If you have concerns about your seeds, reach out and we will do our best to help.
Frequently asked
Questions about Michaelmas Daisy Seeds
When do Michaelmas daisies bloom?
Michaelmas daisies typically bloom from late August through October, with peak flowering often falling in September and early October depending on your climate and the specific variety. They are one of the later-flowering perennials in the garden, which makes them particularly valuable for extending colour into autumn. Some varieties may flower slightly earlier or later, so checking individual cultivar descriptions is worthwhile if timing matters to you.
Do Michaelmas daisy seeds need stratification?
Symphyotrichum novi-belgii seeds do not strictly require cold stratification to germinate, but a short cold, moist period of 2 to 4 weeks in the refrigerator can produce more even results, especially with older seed or in warmer growing regions. Many gardeners skip this step entirely when sowing fresh seed in early spring and get perfectly acceptable results. If you are sowing in late winter indoors, the ambient cool of the season often provides a gentle natural cue anyway.
How long do Michaelmas daisy seeds take to germinate?
Aster seeds germination typically occurs within 14 to 21 days under good conditions, though this varies with soil temperature, moisture levels, seed freshness, and whether the seed received any pre-chilling. Cooler or fluctuating temperatures will slow the process, sometimes extending it to four weeks or more. Patience is key, as the seeds are slow to show but generally reliable once conditions stabilise.
Are Michaelmas daisies toxic to pets?
Michaelmas daisies are generally considered to have low toxicity, but members of the Asteraceae family can occasionally cause mild gastrointestinal upset or skin irritation in sensitive animals, particularly cats and dogs. If you have pets that like to chew garden plants, it is sensible to keep them from eating large quantities of any aster. For specific concerns about a pet, your veterinarian is the right person to consult rather than a plant label.
Can I grow Michaelmas daisies in containers?
Michaelmas daisies can be grown in containers, though they perform better in the ground where their roots have room to spread and moisture levels stay more consistent. If growing in pots, choose a large container of at least 30 to 40 centimetres in diameter, use a good quality loam-based compost, and water and feed regularly through the growing season. Container plants may need dividing or replacing every couple of years as they become congested.
How far apart should I space Michaelmas daisy plants?
Space Michaelmas daisy plants 45 to 60 centimetres apart to allow for their mature spread and to ensure good airflow around each plant, which helps reduce the risk of powdery mildew. Varieties that grow tall, sometimes reaching 90 to 120 centimetres, benefit from the wider end of that spacing so neighbouring plants do not crowd them. Clumps spread over time and will need dividing every 2 to 3 years to keep them vigorous.
Do Michaelmas daisies come back every year?
Yes, Michaelmas daisies are true herbaceous perennials, meaning the plant dies back to the ground in winter and regrows reliably from the root system each spring. They are hardy across a wide range of climates and will return year after year with minimal fuss once established. Dividing the clumps every few years keeps them flowering well, as older congested centres tend to produce fewer blooms than younger outer growth.