Species big blue stem
Tall vertical  green grass blades and red seed head on top.

big blue stem

Andropogon gerardii

Big blue stem (Andropogon gerardii) is an amazing grass species native to North America. The plant grows to a height of up to 5 feet, providing a strong vertical presence in open fields and savannas. Its large clumps provide shelter for wildlife, and its dramatic blue-green foliage changes color to a stunning red shade during the fall season. In addition to its beauty, big blue stem is an excellent source of food for a wide variety of birds and other wildlife. Its seeds are also a great food source for humans. This remarkable plant is sure to add life and beauty to any landscape.

Cycle:

Perennial

Watering:

Average

Propagation:

Seed Propagation,Division,Cutting,Layering Propagation

Hardiness Zone:

4 - 9

Flowers:

Purplish-red Flowers

Sun:

full sun,part sun/part shade

Soil:

Sandy Loamy Clay Rocky

Fruits:

red,brown Fruits In Autumn Ready In

Leaf:

Yes

Leaf Color:

green,gray,gray

Growth Rate:

High

Maintenance:

Low

Drought Tolerant:

Yes

Salt Tolerant:

Yes

Thorny:

Yes

Care Level:

Medium

watering

Big blue stem should be watered once per week, with about an inch of water each time. The frequency of watering can vary slightly depending on factors such as the season or amount of sun/shade the plant is receiving. In hot, dry conditions, slightly more frequent watering may be beneficial, however make sure not to overwater. During cooler weather or if the plant is receiving less sunlight, the frequency of watering may be reduced. Make sure the soil stays evenly moist, but not soggy. Checking the top 1-2 inches of the soil can give a good indication of when to water the plant.

sunlight

Big Blue Stem (Andropogon gerardii) is a warm-season prairie grass native to North America that prefers full sun to partial shade. The best growing conditions for Big Blue Stem are in direct sunlight throughout the day, with exposure to roughly 6 to 8 hours of sunlight per day. This amount of sun can also vary a bit depending on the season, with a few extra hours in the summer and slightly less light during the winter.

pruning

Big Blue Stem (Andropogon gerardii) should be pruned in late winter or early spring, when the new shoots are just beginning to emerge. Pruning should involve cutting back the stems to an appropriate height, usually leaving about 18-24 inches of stem remaining above ground. Stems should also be thinned out by removing any stems that are smaller or thinner than the remaining stems. This will help to ensure the plant is kept to a manageable size and helps to promote air circulation. Pruning should be done carefully to avoid damaging remaining stems or the roots of the plant.

Season

Fall
Winter
Spring
Summer
Sep
Oct
Nov
Dec
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Starts Flowering

Big blue stem typically starts flowering in late summer, usually in August or September.

Harvest Fruit

grass The harvesting of Andropogon gerardii typically begins in late summer, usually in August or September.

Starts Flowering

Big blue stem typically starts flowering in late summer, usually in August or September.

Harvest Fruit

grass The harvesting of Andropogon gerardii typically begins in late summer, usually in August or September.

Hardiness Map