Gymnocarpium robertianum
TAXONOMY
FamilyCystopteridaceae
GenusGymnocarpium
Zone4
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Gymnocarpium robertianum, commonly known as the limestone fern, is a small fern in the family Cystopteridaceae. It is native to temperate regions and typically found in shaded, rocky areas with calcareous soils. This rhizomatous geophyte has a delicate appearance with finely divided fronds and thrives in cool, moist environments. It undergoes a dormancy period during the winter months.
ALSO KNOWN AS
Lastrea Calcarea
Lastrea Obtusifolia
Limestone Oak Fern
Aspidium calcareum
Aspidium robertianum
Carpogymnia robertiana
Currania robertiana
Dryopteris robertiana
Gymnocarpium altaycum
Gymnocarpium obtusifolium
Lastrea robertiana
Nephrodium robertianum
Phegopteris calcarea
Phegopteris dryopteris var. robertiana
Phegopteris robertiana
Phegopteris robertianum
Polypodium calcareum
Polypodium dryopteris var. calcareum
Polypodium dryopteris var. robertianum
Polypodium obtusifolium
Polypodium robertianum
Thelypteris robertiana
OVERVIEW
VPDCalculate
WaterWet
SoilLoamy
LightIndirect Bright (6 Hours)
Temperature15° C
Humidity70%
Dormancy3 Months
pH6.5
Pressure1,013 mbar
DETAILS
Care Instructions
To care for Gymnocarpium robertianum, provide it with bright, indirect light and maintain moderate temperatures. Keep the soil evenly moist and ensure high humidity levels. This fern prefers a stable environment and does not require frequent fertilization.Soil
Gymnocarpium robertianum prefers loamy soil with good drainage. The soil should be kept evenly moist but not waterlogged. A mix of garden soil with organic matter such as leaf mold or compost works well.Fertilizer
This fern does not have high fertilizer requirements. If desired, a light application of a balanced, water-soluble fertilizer can be applied during the growing season, but it is generally not necessary.Repotting
Repot Gymnocarpium robertianum every 2-3 years or when it outgrows its container. Choose a slightly larger pot with good drainage and use a fresh, loamy soil mix. Handle the delicate roots with care during repotting.Propagation
Propagate Gymnocarpium robertianum by division in early spring. Carefully separate the rhizomes and replant them in suitable soil. Ensure the new divisions are kept moist and in a shaded area until established.Pruning
Pruning is not typically required for Gymnocarpium robertianum. Remove any dead or damaged fronds to maintain the plant's appearance and health.Toxicity
Gymnocarpium robertianum is not known to be toxic to pets or humans. It is generally considered safe to grow in homes and gardens.REVOLUTIONIZE YOUR PLANT CARE
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