Crass Fern
Taxonomy
Thelypteris crassa
Thelypteris
Thelypteridaceae
Polypodiales
How to care for Crass Fern
How often to water your Crass Fern
every 9
Crass Fern needs 0.5 cups of water every 9 when it doesn’t get direct sunlight and is potted in a 5" pot.
Use our water calculator to personalize watering recommendations to your environment or download Greg for more advanced recommendations for all of your plants.
Water 0.5 cups every
9
Finding light for Crass Fern in your home
a window
Crass Fern love being close to bright, sunny windows 😎.
Place it less than 1ft from a south-facing window to maximize the potential for growth.
Crass Fern does not tolerate low-light 🚫.
Select your region to see how the current weather in your area affects the placement of Crass Fern in your home 🏡.
How to fertilize Crass Fern
Most potting soils come with ample nutrients which plants use to produce new growth.
By the time your plant has depleted the nutrients in its soil it’s likely grown enough to need a larger pot anyway.
To replenish this plant's nutrients, repot your Crass Fern after it doubles in size or once a year—whichever comes first.
Care Summary for Crass Fern
Crass Fern
Greg recommends:
Water
0.5 cups every 9 days
Placement
< 1ft from a window
Nutrients
Repot after 2x growth
Based on the 4” pot your plant is in, and that it doesn’t get direct sunlight.