Does this plant need fertilizer to bloom?

It generally does fine without it if the soil is rich. If you suspect poor soil, a light dose of balanced fertilizer in spring can help.

How much sun is too much?

In very hot climates, full afternoon sun can be harsh. Bright indirect light or morning sun is usually the sweet spot.

Square-stalked St. John's-wort: not flowering

Check these first

Assess how many hours of bright light the plant gets daily.
Check if the soil has been drying out completely between waterings.
Look for signs of pests that might be draining the plant's energy.

Likely causes

Insufficient light
Most likely
How to tell: The plant looks healthy but has no buds. The stems might be stretching out looking for more light.
What to do: Move the plant to a brighter location with more direct sun or bright indirect light. It needs plenty of energy to support flower production.
Improper moisture
Possible
How to tell: The plant is stressed from drying out too often. It focuses on survival rather than blooming.
What to do: Stick to a strict watering schedule every 2 to 4 days. Consistent moisture is key for this plant to bloom well.

Other plants that won't flower

Find out what's wrong with your square-stalked st. john's-wort

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

Worry if the plant is mature and has had plenty of light but still shows no signs of buds during the growing season. It is normal for young plants to skip flowering their first year.

Stopping it coming back

Keep the plant in a bright spot and ensure the soil never dries out completely.