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Symphyotrichum lanceolatum
panicled aster
Symphyotrichum lanceolatum
Symphyotrichum lanceolatum, commonly known as panicled aster or white panicled aster, is a perennial herbaceous plant in the aster family. It typically grows to a height of 1 to 5 feet and features lance-shaped leaves and numerous small, daisy-like flowers with white to pale lavender rays and yellow centers. It's known for its late-season blooms, providing important nectar and pollen for pollinators when other flowers are scarce. This aster spreads readily by rhizomes and seed, making it adaptable to various habitats. It's a valuable plant for wildlife gardens and naturalized areas.
CategoryDetails
Plant TypePerennial plant
Estimated Plant Lifespan5 years lifespan
Sun Requirements6+ hours direct sunlight (Full Sun)
Pollination

Method: animal

Notes: Primarily pollinated by bees, butterflies, and other insects. Planting in groups can increase pollination success.

Watering Requirements

Method: Top water

Frequency: Water when the top inch of soil is dry.

Notes: Avoid overwatering, as this can lead to root rot. Established plants are somewhat drought-tolerant.

Humidity Requirements

Level: Moderate

Cleaning RequirementsDeadheading spent flowers encourages continued blooming and prevents excessive self-seeding. Cut back stems to the ground in late fall or early spring.
Temperature Range

Min: -40°C

Max: 35°C

Solidago speciosa
showy goldenrod
Solidago speciosa
Goldenrods provide a contrasting yellow color and attract beneficial insects that also benefit asters. They thrive in similar conditions, such as full sun and well-drained soil, creating a visually appealing and ecologically beneficial pairing.
Eutrochium purpureum
sweet Joe-Pye-weed
Eutrochium purpureum

While beautiful, Sweet Joe-Pye Weed can grow quite large and may overshadow Symphyotrichum lanceolatum, competing for sunlight and resources.

Aphids

Aphids are small, sap-sucking insects that can cluster on new growth. They cause distorted leaves, stunted growth, and can transmit diseases. Look for sticky honeydew and sooty mold.

Spider Mites

Spider mites are tiny pests that suck sap from leaves, causing stippling, yellowing, and eventually bronzing. They thrive in hot, dry conditions and create fine webs on the plant.

Steps:

    • Division: Divide established clumps in early spring or fall.
    • Carefully dig up the plant.
    • Separate the rhizomes into sections, ensuring each section has roots and shoots.
    • Replant the divisions in well-prepared soil.
    • Seed: Sow seeds indoors 6-8 weeks before the last expected frost or direct sow outdoors in the fall.
    • If starting indoors, keep the soil consistently moist.
    • Harden off seedlings before transplanting outdoors.
    • Space plants appropriately based on mature size.

Neem Oil

Effective natural insecticide for controlling aphids and spider mites.

Compost Tea

Provides nutrients and beneficial microbes to improve plant health and resilience.