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Pictured is a seedling cup from which the single ferns are plugged
Crested Maidenhair Fern Care Sheet for Terrariums

Introduction: The Crested Maidenhair Fern (Adiantum raddianum 'Fragrans') is a delicate and graceful fern variety that adds a touch of elegance to terrariums. Known for its lacy foliage and arching fronds, this fern requires specific care to thrive in a terrarium setting. Follow these guidelines to ensure the health and beauty of your Crested Maidenhair Fern:

1. Terrarium Setup:

  • Use a well-draining, lightweight potting mix with a combination of peat moss, perlite, and a small amount of orchid bark.
  • Ensure the terrarium has proper drainage to prevent waterlogging. Aim for a substrate pH between 6.1 and 7.5.

2. Light:

  • Provide bright, indirect light. Crested Maidenhair Ferns thrive in filtered sunlight or dappled shade.
  • Avoid direct sunlight exposure, as it can scorch the delicate fronds. Consider placing the terrarium near a north or east-facing window.

3. Temperature and Humidity:

  • Maintain a temperature range between 65-75°F (18-24°C). These ferns prefer moderate temperatures.
  • Keep humidity levels high, ideally between 50-80%. Regular misting or placing a humidity tray in the terrarium can help achieve and maintain appropriate humidity.

4. Watering:

  • Keep the substrate consistently moist but not waterlogged. Water when the top inch of the substrate feels slightly dry.
  • Use room temperature, filtered water to prevent mineral buildup. Water the soil around the fern, avoiding direct contact with the fronds.

5. Fertilization:

  • Feed your Crested Maidenhair Fern with a balanced liquid fertilizer diluted to half strength every 4-6 weeks during the growing season (spring and summer).
  • Avoid over-fertilizing, as ferns are sensitive to excess nutrients.

6. Pruning and Maintenance:

  • Trim any yellow or damaged fronds using clean, sharp scissors or pruning shears.
  • Groom the fern regularly to remove any debris and maintain its elegant appearance.

7. Air Circulation:

  • Ensure good air circulation within the terrarium to prevent the growth of mold or mildew. Periodically open the terrarium lid for fresh air exchange.

8. Monitoring for Pests:

  • Keep an eye out for pests such as aphids or mites. Treat any infestations promptly with insecticidal soap or neem oil.

9. Repotting:

  • Repot the Crested Maidenhair Fern if it outgrows its container or when the substrate breaks down. Use fresh, well-draining substrate during repotting.

By following these care guidelines, you can create an optimal environment for your Crested Maidenhair Fern in a terrarium. Regular observation and adjustment to the specific needs of your fern will ensure a healthy and thriving display.

Crested Maidenhair fern plug

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