Quaking Aspen Tree Seeds

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About & Species

Quaking Aspen
(Populus tremuloides)

The Quaking Aspen is one of the most popular trees in the world. The Quaking Aspen is known for its pale white trunks and fluttering green leaves (hence the name Quaking Aspen). A Quaking Aspen tree in Utah is estimated to be 80,000 years old - making it quite possibly the oldest living thing on Earth. The Quaking Aspen Tree is commonly found in open woods, old fields, roadsides and waste places. It is a fast-growing tree reaching heights of 40 to 50 feet.  

Soil Type: Dry to moist soil, loamy sands, shallow rocky soils and clay.

Zones: 1 to 6

Germination Range: 30-50%

Stratification Requirement: Use a plastic container with a lid. Add Jiffy seed starting mix. Add water, enough to keep the mix moist. Place your seeds on top of the mix. Place the container on a seedling starter heat mat under a growing light. Germinates takes place in 2-3 days.

Indoor Planting: If your seeds require stratification or scarification – do the recommended pretreatment before planting indoors. Planting Instructions: Fill a container with seed starting mix to about ½ inch from the top. Place your seeds 1 inch to 1 ½ inches below the soil surface. Gently water your seeds to keep moist, not soaking wet. Heat & humidity is critical for germination. Germination may occur in 1 week or as long as 3 months (depending on the species). Place the seed container on a heat mat under growing light(s). Keep your growing lights on 14 hours per day. Keep your heat mat on 24 hours per day. Once your seeds germinate, move each seed into its own container under the growing lights and on the heat mat. Keep your seedlings indoors for 2-3 months before transplanting outdoors in the spring (May to June).

Outdoor Planting: If your seeds do not require stratification: the best time to plant tree and shrub seeds outdoors is after the last frost in your area (spring). In the Northern states – the best time to plant seeds outdoors is from May to June. If your seeds require pretreatment: you should plant your seeds outdoors before the ground freezes in your area (late September to early November). Your seeds will naturally stratify during the cold winter. Germination usually occurs in May or during the spring season.