Photo: Saryu Mae 前 朝琉CC BY 4.0via iNaturalistresized / cropped
Brunel's Sweet Vernal Grass Plant Care
Anthoxanthum brunonis (Hook.f.)
Updated · Sources · How we source care data
This plant, with its delicate, feathery green leaves, originates from Australia. Its unique foliage and compact growth habit make it a desirable addition to any plant collector's collection. Anthoxanthum brunonis thrives in bright, indirect light and well-draining soil, making it an easy-care plant option.
Every 7–10 days
Full sun to partial shade
45–75°F
50–70%
At a glance
How do you care for Brunel's Sweet Vernal Grass?
Water Brunel's Sweet Vernal Grass every 7–10 days, letting the top layer of soil dry out between waterings, and give it full sun to partial shade. It prefers temperatures of 45–75°F (7–24°C) and 50–70% humidity. Fertilize it every 2 months during the growing season.
Where Is the Brunel's Sweet Vernal Grass Native To?
What Is the Brunel's Sweet Vernal Grass?
Brunel's Sweet Vernal Grass (Anthoxanthum brunonis) belongs to the Poaceae family within the Anthoxanthum genus. Brunel's Sweet Vernal Grass is native to the South Island of New Zealand and to the Auckland and Campbell Islands.
Brunel's Sweet Vernal Grass displays a clumping grass growth habit, reaching up to 1 ft tall with a spread of approximately 1 ft. Brunel's Sweet Vernal Grass produces small inconspicuous flowers in spikelets.
Leaf size: approximately 8 inches.
How Often Should You Water a Brunel's Sweet Vernal Grass?
Anthoxanthum brunonis requires watering every 7–10 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 7–10 days
Let soil partially dry between waterings
What Light Does the Brunel's Sweet Vernal Grass Need?
Brunel's Sweet Vernal Grass thrives in full sun to partial shade.
Light Requirement
Full sun to partial shade
What Temperature and Humidity Does the Brunel's Sweet Vernal Grass Prefer?
Anthoxanthum brunonis grows best at temperatures of 45–75°F. Brunel's Sweet Vernal Grass prefers humidity levels of 50–70%. A pebble tray or humidifier helps maintain adequate moisture around the plant.
Temperature
45–75°F
Humidity
50–70%
What Soil Mix Works Best for a Brunel's Sweet Vernal Grass?
Well-draining loamy soil with added compost for nutrients. Good drainage is essential for Brunel's Sweet Vernal Grass to prevent waterlogging, which leads to root rot and fungal issues.
How Often Should You Fertilize a Brunel's Sweet Vernal Grass?
Feed Brunel's Sweet Vernal Grass every 2 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 2 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 Brunel's Sweet Vernal Grass?
Divide and replant every 2-3 years in early spring. 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 Brunel's Sweet Vernal Grass?
Brunel's Sweet Vernal Grass can be propagated through division, seed sowing. Similar propagation techniques also apply to annual vernal grass plant care, which shares the same genus.
Is the Brunel's Sweet Vernal Grass Toxic to Pets and Children?
Pet safety not verified
The ASPCA does not list Brunel's Sweet Vernal Grass, 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 Brunel's Sweet Vernal Grass?
Brunel's Sweet Vernal Grass 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 Brunel's Sweet Vernal Grass Need?
Brunel's Sweet Vernal Grass grows outdoors in USDA Zone 8a – 9b. It survives winters down to planting zone 8a. Brunel's Sweet Vernal Grass is native to the South Island of New Zealand and to the Auckland and Campbell Islands.
Hardiness Zone
Zone 8a – 9b
Keep exploring plants
Brunel's Sweet Vernal Grass 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 Anthoxanthum genus — compare its care with other Anthoxanthum species on PlantoScan.
Anthoxanthum is part of the Poaceae plant family — browse all Poaceae genera and species.
Brunel's Sweet Vernal Grass thrives in bright light and direct sun — see other bright-light plants.
Related Plant Care Guides
Closely related plants with similar care requirements:
Sources
- Scientific name & taxonomy: Anthoxanthum brunonis (Hook.f.), family Poaceae (first published in ined.) — World Flora Online record, IPNI name record.
- Pet toxicity: Pet safety not verified: the ASPCA does not list Brunel's Sweet Vernal Grass, 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.
- Photo: Saryu Mae 前 朝琉, CC BY 4.0, iNaturalist — original.
- Hardiness zone: USDA Zone 8a – 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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