When should I expect flowers?

Big bluestem typically blooms in late summer, usually from August to September.

Do I need to fertilize to get more flowers?

No, fertilizing actually discourages flowering. This plant prefers poor soil.

Big bluestem: not flowering, causes and fixes

Check these first

Measure the hours of direct sun the plant gets daily.
Check if nearby trees have grown to shade the area.
Verify if you have applied any lawn fertilizer nearby.

Likely causes

Insufficient light
Most likely
How to tell: The plant looks tall and floppy rather than upright and sturdy. It is likely getting less than six hours of direct sun per day.
What to do: Move the plant to a spot that receives full, unobstructed sun. If it cannot be moved, trim back overhanging tree branches to let more light reach the ground.
Excessive nitrogen
Possible
How to tell: The grass looks very green and lush but produces no seed heads. This often happens if the soil is too rich or if you have fertilized it recently.
What to do: Stop all fertilization immediately. Big bluestem prefers lean soil and does not need supplemental food to thrive.

Other plants that won't flower

Find out what's wrong with your big bluestem

The list above covers the usual causes. Pocket Botanist looks at a photo of your actual plant and tells you the likely cause, how serious it is, and what to try first. Identification and a health check are free.

When to worry

If your plant is young, it may take two to three years to establish enough energy to bloom. If it is mature and still not blooming after moving to full sun, it may be a soil issue.

Stopping it coming back

Ensure the plant is sited in a location with at least eight hours of direct sun. Avoid adding compost or fertilizer to the planting hole.

Big bluestem: not flowering? Check yours with a photo

Every plant is a little different. Take a photo of your big bluestem and Pocket Botanist tells you which cause is most likely, how serious it is, and what to try first. A few checks a day are free. Save the plant and you get care reminders timed for it.

Get the app · Or check it from a photo now, free

Questions people ask

When should I expect flowers?: Big bluestem typically blooms in late summer, usually from August to September.
Do I need to fertilize to get more flowers?: No, fertilizing actually discourages flowering. This plant prefers poor soil.

Why is my Big bluestem not producing its turkey foot flowers?