Grammitis wattsii Plant Care
Grammitis wattsii Copel.
Updated · Sources · How we source care data
Grammitis wattsii is a fern in the family Polypodiaceae. The specific epithet honours the Reverend W.
Every 3–5 days
Filtered light, indirect sunlight
60–75°F
60–80%
At a glance
How do you care for Grammitis wattsii?
Water Grammitis wattsii every 3–5 days, letting the top layer of soil dry out between waterings, and give it filtered light, indirect sunlight. It prefers temperatures of 60–75°F (16–24°C) and 60–80% humidity. Fertilize it every 6 months during the growing season.
What Is the Grammitis wattsii?
Grammitis wattsii (Grammitis wattsii) belongs to the Polypodiaceae family within the Grammitis genus.
Grammitis wattsii displays a low rosette, spreading growth habit, reaching up to 0.5 ft tall with a spread of approximately 1 ft. Grammitis wattsii produces non-flowering.
Leaf size: approximately 6 inches.
How Often Should You Water a Grammitis wattsii?
Grammitis wattsii 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 Grammitis wattsii Need?
Grammitis wattsii thrives in filtered light, indirect sunlight. Avoid placing Grammitis wattsii in direct, harsh sunlight for extended periods, as this can scorch the foliage.
Light Requirement
Filtered light, indirect sunlight
What Temperature and Humidity Does the Grammitis wattsii Prefer?
Grammitis wattsii grows best at temperatures of 60–75°F. Grammitis wattsii prefers humidity levels of 60–80%. A pebble tray or humidifier helps maintain adequate moisture around the plant.
Temperature
60–75°F
Humidity
60–80%
What Soil Mix Works Best for a Grammitis wattsii?
Loose, well-draining soil mix with high organic content. Good drainage is essential for Grammitis wattsii to prevent waterlogging, which leads to root rot and fungal issues.
How Often Should You Fertilize a Grammitis wattsii?
Feed Grammitis wattsii every 6 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 6 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 Grammitis wattsii?
Repot every 1-2 years in 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 Grammitis wattsii?
Grammitis wattsii can be propagated through spores, division of rhizomes. Similar propagation techniques also apply to grammitis australis plant care, which shares the same genus.
Is the Grammitis wattsii Toxic to Pets and Children?
Pet safety not verified
The ASPCA does not list Grammitis wattsii, 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 Grammitis wattsii?
Grammitis wattsii is susceptible to spider mites, scale insects, mealybugs. 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 Grammitis wattsii Need?
Grammitis wattsii grows outdoors in USDA Zone 13a. It survives winters down to planting zone 13a. In cooler regions, grow Grammitis wattsii as a houseplant or bring it indoors before the first frost.
Hardiness Zone
Zone 13a
Keep exploring plants
Grammitis wattsii 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 Grammitis genus — compare its care with other Grammitis species on PlantoScan.
Grammitis is part of the Polypodiaceae plant family — browse all Polypodiaceae genera and species.
Grammitis wattsii thrives in bright light and direct sun — see other bright-light plants.
More Grammitis Species
Other Grammitis species in PlantoScan's care catalogue share similar watering, light, and soil preferences:
Sources
- Scientific name & taxonomy: Grammitis wattsii Copel., family Polypodiaceae (first published in Univ. Calif. Publ. Bot. 18: 222. 1942. (1942)) — World Flora Online record, IPNI name record.
- Pet toxicity: Pet safety not verified: the ASPCA does not list Grammitis wattsii, 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 13a, calculated from the plant's minimum temperature.
- 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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