Needle Bentgrass Plant Care
Agrostis subulata Hook.f.
Updated · Sources · How we source care data
This plant is easily recognizable by its needle-like leaves that form dense clumps. Originating from the Mediterranean region, Agrostis subulata is sought after by plant collectors for its ability to thrive in rocky, dry soils and its striking appearance in garden borders.
Every 3–5 days
Full sun to partial shade
60–80°F
40–70%
At a glance
How do you care for Needle Bentgrass?
Water Needle Bentgrass every 3–5 days, letting the top layer of soil dry out between waterings, and give it full sun to partial shade. It prefers temperatures of 60–80°F (16–27°C) and 40–70% humidity. Fertilize it every 8 months during the growing season.
Where Is the Needle Bentgrass Native To?
What Is the Needle Bentgrass?
Needle Bentgrass (Agrostis subulata) belongs to the Poaceae family within the Agrostis genus. Needle Bentgrass is native to the New Zealand Subantarctic Islands, specifically the Auckland Islands, Campbell Island, and Antipodes Island. Needle Bentgrass is also known as Redtop Bentgrass.
Needle Bentgrass displays an upright, tufted grass growth habit, reaching up to 2 ft tall with a spread of approximately 1.5 ft. Needle Bentgrass produces small inconspicuous flowers.
Leaf size: approximately 12 inches.
How Often Should You Water a Needle Bentgrass?
Agrostis subulata requires watering every 3–5 days. Allow the top layer of soil to dry between waterings to prevent root rot. Reduce watering frequency during winter when growth slows.
Watering Frequency
Every 3–5 days
Let soil partially dry between waterings
What Light Does the Needle Bentgrass Need?
Needle Bentgrass thrives in full sun to partial shade.
Light Requirement
Full sun to partial shade
What Temperature and Humidity Does the Needle Bentgrass Prefer?
Agrostis subulata grows best at temperatures of 60–80°F. Needle Bentgrass prefers humidity levels of 40–70%.
Temperature
60–80°F
Humidity
40–70%
What Soil Mix Works Best for a Needle Bentgrass?
Well-draining loamy soil. Good drainage is essential for Needle Bentgrass to prevent waterlogging, which leads to root rot and fungal issues.
How Often Should You Fertilize a Needle Bentgrass?
Feed Needle Bentgrass every 8 months during the growing season (spring and summer) with a balanced fertilizer diluted to the strength on the label.
Pause feeding in autumn and winter, when growth slows, and never fertilize dry soil — water first.
Fertilizing
Every 8 months
During the growing season
The PlantoScan app can remind you when to water and when to fertilize each plant.
How Do You Repot a Needle Bentgrass?
Rarely needs repotting. Choose a pot one size larger than the current container, and ensure it has drainage holes to allow excess water to escape.
How Do You Propagate a Needle Bentgrass?
Needle Bentgrass can be propagated through seeds, division. Similar propagation techniques also apply to mueller's bentgrass plant care, which shares the same genus.
Is the Needle Bentgrass Toxic to Pets and Children?
Pet safety not verified
The ASPCA does not list Needle Bentgrass, so we can't confirm whether it is safe for cats and dogs. Keep pets from chewing it as a precaution.
This is a general caution, not veterinary or medical advice. If your pet ate a plant, contact your vet or animal poison control.
See all plants toxic to cats and plants toxic to dogs.
What Pests and Diseases Affect the Needle Bentgrass?
Needle Bentgrass is susceptible to aphids, grasshoppers, cutworms. Inspect the foliage regularly, especially along leaf undersides and stems. Treat infestations promptly with insecticidal soap or neem oil to prevent spread.
Yellow leaves, brown tips or drooping? See common plant problems and how to fix them.
What USDA Hardiness Zone Does the Needle Bentgrass Need?
Needle Bentgrass grows outdoors in USDA Zone 8b – 9b. It survives winters down to planting zone 8b. Needle Bentgrass is native to the New Zealand Subantarctic Islands, specifically the Auckland Islands, Campbell Island, and Antipodes Island.
Hardiness Zone
Zone 8b – 9b
Keep exploring plants
Needle Bentgrass is one of many species covered in the complete plant care and identification guide, which groups plants by genus, attribute, and popularity.
It belongs to the Agrostis genus — compare its care with other Agrostis species on PlantoScan.
Agrostis is part of the Poaceae plant family — browse all Poaceae genera and species.
Needle Bentgrass thrives in bright light and direct sun — see other bright-light plants.
More Agrostis Species
Other Agrostis species in PlantoScan's care catalogue share similar watering, light, and soil preferences:
Sources
- Scientific name & taxonomy: Agrostis subulata Hook.f., family Poaceae (first published in Fl. Antarct. : 95 (1845)) — World Flora Online record, IPNI name record.
- Pet toxicity: Pet safety not verified: the ASPCA does not list Needle Bentgrass, so we can't confirm whether it is safe for cats and dogs. Checked against the ASPCA plant list; any other toxicity note on this page comes from PlantoScan's plant database.
- Hardiness zone: USDA Zone 8b – 9b, estimated from the plant's typical growing conditions.
- Care values(watering, light, temperature, humidity, soil, fertilizing): PlantoScan's plant database, filtered by automatic plausibility checks — values that fail them are hidden. How we source and check plant data.
Spotted a mistake? Email info@upvision.media with the page link — we check and correct reported errors.
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