Bigleaf Aster (Macrophylla)

The Bigleaf Aster (Macrophylla) is generally described as a perennial forb/herb. This is native to the U.S. (United States) has its most active growth period in the spring and summer and fall . The Bigleaf Aster (Macrophylla) has dark green foliage and inconspicuous purple flowers, with an abuncance of conspicuous brown fruits or seeds. The greatest bloom is usually observed in the late summer, with fruit and seed production starting in the summer and continuing until fall. Leaves are not retained year to year. The Bigleaf Aster (Macrophylla) has a long life span relative to most other plant species and a moderate growth rate. At maturity, the typical Bigleaf Aster (Macrophylla) will reach up to 4.6 feet high, with a maximum height at 20 years of 0 inches.

The Bigleaf Aster (Macrophylla) is easily found in nurseries, garden stores and other plant dealers and distributors. It can be propagated by bare root, container, seed, sprigs. It has a slow ability to spread through seed production and the seedlings have medium vigor. Note that cold stratification is not required for seed germination and the plant cannot survive exposure to temperatures below -28°F. has low tolerance to drought and restricted water conditions.

Plant Basics
Category
Growth Rate Moderate
General Type Forb/herb
Growth Period Spring, Summer, Fall
Growth Duration Perennial
Lifespan Long
Plant Nativity Native to U.S.
Commercial Availability Routinely Available
Physical Characteristics
Bloom Period Late Summer
Displays Fall Colors Yes
Shape/Growth Form Rhizomatous
Drought Tolerance Low
Shade Tolerance Tolerant
Height When Mature 4.6
Vegetative Spread Moderate
Flower Color Purple
Flower Conspicuousness Yes
Fruit/Seed Abundance High
Fruit/Seed Seasonality Summer Fall
Seed Spread Rate Slow
Gardening Characteristics
Propagations (Ways to Grow) Bare Root, Container, Seed, Sprigs
Moisture Requirements Medium
Cold Stratification Required No
Minimum Temperature -28
Soil Depth for Roots 10
Toxic to Nearby Plants No
Toxic to Livestock No
After-Harvest Regrowth Rate Slow
After-Harvest Resprout Ability No
Responds to Coppicing No
Growth Requirements
pH Range 4.9–6.9 pH
Precipitation Range 35–35 inches/yr
Planting Density 1700–4800 indiv./acre
Soil Textures Fine, Medium
Soil Depth for Roots 10
Minimum Frost-Free Days 90 day(s)
Salinity Tolerance None
CaCO3 Tolerance Medium
Sustainability & Use
Leaf Retention No
Palatability Low
Fire Resistant No
Causes Livestock Bloating None

Source: USDA, NRCS, PLANTS Database, plants.usda.gov.
National Plant Data Center, Baton Rouge, LA 70874-4490 USA