Button Fern

Water button fern when the top 1 inch of soil feels dry to the touch, taking care to avoid overwatering that can lead to root rot; empty excess water from the saucer after each watering to prevent soggy roots. Reduce watering frequency in fall and winter when growth slows, only providing enough moisture to keep the soil from drying out completely.

Thrives in bright, indirect light, such as near a north-facing or east-facing window, but can tolerate lower light conditions better than many other fern species. Avoid direct, intense sunlight, which will scorch its delicate round leaflets and cause yellowing or browning of foliage.

Requires a loose, well-draining, slightly acidic potting mix with high organic content; a blend of standard potting soil, peat moss or coco coir, and perlite or orchid bark works well to support healthy root growth. Avoid heavy, compacted soils that hold excess moisture, as this will quickly lead to root rot in this species.

Feed once a month during the spring and summer growing season with a balanced, water-soluble houseplant fertilizer diluted to half the recommended strength to avoid burning the fern’s sensitive roots. Do not fertilize in fall and winter when the plant is dormant, as this can cause nutrient buildup in the soil that damages roots.

Prefers consistent temperatures between 60-75°F (15-24°C), and can tolerate brief dips down to 50°F (10°C) but is not frost-hardy. Avoid placing it near cold drafts from windows, air conditioning units, or heating vents, as sudden temperature fluctuations can cause frond drop.

Prune away any yellow, brown, or dead fronds at the base using clean, sharp scissors to encourage new growth and maintain the plant’s tidy appearance. Light pruning can be done at any time of year, but major trimming is best performed in early spring just before the active growing season begins.

Most easily propagated by division during repotting in early spring: carefully separate the root ball into smaller sections, each with a healthy clump of fronds and roots, and plant each division in its own pot with fresh potting mix. Spore propagation is possible but much slower and more challenging, making it less suitable for home growers.

Tolerates average household humidity levels of 40-50% better than most tropical ferns, but will grow more vigorously with humidity levels of 50-60%. If your home is very dry, increase humidity by placing the pot on a tray of pebbles filled with water, grouping it with other plants, or running a small humidifier nearby.

Repot every 2-3 years in early spring, moving to a pot only 1-2 inches larger than the current one, as button ferns prefer to be slightly root-bound and will suffer in overly large pots with excess soil that holds too much moisture. Ensure the new pot has adequate drainage holes to prevent waterlogging of the root system.