Cast Iron Plant
Acorus gramineus
Cast Iron Plant is a resilient, evergreen perennial known for its tolerance to a wide range of growing conditions, including low light and neglect. Its glossy, dark green leaves and upright form make it an excellent choice for low-maintenance indoor plantings or shaded garden beds.
USDA Hardiness Zones: 8–11 (Grow as an indoor plant in cooler climates)
Sun Requirements: Low light to part shade
Water Requirements: Moderate; prefers well-drained soil and consistent moisture
Growth Rate: Slow
Mature Size: 2–3 feet tall, 2–3 feet wide
Soil Preference: Moist, well-drained soil
Landscape Use: Indoor plant, ground cover, shade gardens, containers
Maintenance: Very low maintenance; prune to remove dead leaves and water regularly for optimal growth
Delivery vs. Shipping Options
We hand delivery locally every week to the Raleigh-Durham, NC area. All orders outside of this area are shipped via USPS, UPS, or FedEx.
14-Day Guarantee
If you have any issues with your plants, please message us within 14-days of delivery.
Welcome to The Plant Firm
The Plant Firm was created during the lockdown of 2020 as a fun project to give me something to do. It quickly became a much larger endeavor and one that I knew needed more attention to be done right. We started The Plant Firm because great plants shouldn't cost a fortune or require a trip across town. Every plant we carry is hand-selected for quality and delivered right to your door. Locally rooted in Raleigh, NC.
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