Smooth crabgrass (Digitaria ischaemum)
Care, watering, light and tips for Smooth crabgrass on Floravia.
Quick facts
- Family: Poaceae
- Difficulty: Moderate care
- Watering: every 7 days
- Light: Partial shade
- Temperature: 10–30 °C
About Smooth crabgrass
Digitaria ischaemum, commonly known as smooth crabgrass or finger millet, is an annual grass belonging to the Poaceae family. It features prostrate or ascending stems and pale green lanceolate leaves, culminating in characteristic digitate inflorescences. Although often considered a weed, its delicate and creeping appearance could be interesting in naturalized meadow compositions or as an ephemeral ground cover in low-maintenance gardens.
Native range
Europe and temperate Asia
Care tips
This species prefers full sun and tolerates a wide range of soils, though it thrives best in well-drained and slightly acidic substrates. Watering should be moderate, allowing the soil to dry out between waterings, as it is quite drought-tolerant once established. Avoid over-fertilization, as it can promote overly vigorous growth and make it more susceptible to diseases. A common mistake is attempting to grow it in dense shade, which will result in weak and leggy growth.
How to save a dying Smooth crabgrass
- Warning signs
- Yellowish or reddish leaves, weak growth, underdeveloped seed heads.
- First aid
- Improve soil drainage, reduce watering if waterlogged, or water if dry.
- What kills it
- Soil compaction, nutrient deficiency, excessive moisture, or extreme drought.
- Can it be saved?
- Yes, if the root cause is corrected and it's given a suitable environment to recover.