Can you tell me if this is a real fern or if the fronds have been treated to be that color?
This is a variegated foxtail fern (Asparagus densiflorus Meyersii). They are not true ferns at all but rather members of the Lily Family. They have arching plumes of tightly packed, needle-like leaves that look soft and delicate, but this is really quite a hardy plant. These ferns also produce small flowers and red berries. Here are some care tips on how to grow a foxtail fern.
Light: bright indirect lightVery few houseplants should be placed in direct sun. High light refers only to bright indirect light since direct sun often burns the leaves of indoor houseplants. An area that is too hot and dry encourages Spider Mites and causes blooms to quickly fade. A northern exposure really doesn't provide enough light for high light plants. These plants need to be placed directly in front of an east-facing window, within 1-3 feet of a west-facing window, and within 5 ft. of a south facing window. A high light area has over 300 ft. candles of light. but no direct sun
Water: Keep the soil moist when plant is actively growing in spring and summer. Reduce water in winter and in lower light.
Temperature: 70-75 degrees during the day and about 10 degrees cooler at night.
Plant Food: Feed your fern monthly with a liquid all purpose fertilizerPlants need fertilizer only when they are actively growing. Slow growing plants in low light require very little plant food. Too much fertilizer is worse than not enough. Most plants prefer a water soluble plant food at 1/2 the recommended strength. Plants that are in bloom or dormant should not be fertilized. Houseplant food contains nitrogen (N), phosphorus (P), and potassium (K). A fertilizer containing these elements in equal proportion is considered a balanced plant food. Nitrogen helps in photosynthesis and encourages the growth of leaves and stems. Potassium and phosphorus also help in photosynthesis and aid in root and flower development. Most fertilizers have trace elements of other minerals that are lacking in the soil but are necessary for good plant growth. Fertilizers have a high salt content. If a plant is not producing new leaves and doesn’t absorb the fertilizer, salts build up in the soil. These salts can burn the roots, discolor the leaves, and cause new growth to be small. in the spring and summer. Always dilute the plant food to 1/2-1/3 the recommended strength.
Humidity: These ferns like high humidity but still grow well in dryer areas.
These plants are considered poisonous and should be kept away from pets and children. Read more about common houseplants that are poisonous in Don’t Feed Me To Your Cat! A Guide to Poisonous Houseplants