You see I have one in my bathroom above. In answer to your question dvk421 I believe that the fronds turn yellow when under or over watered. It has delicate, wispy foliage that makes a lovely addition to floral arrangements. Fertilizers with slow release are best. Turn the plant every few days toward the light. The ideal N-P-K ratio for ferns is a ratio of 10-10-10- or 15-15-15 (any similar ratio). Firm the compost with your thumbs. Asparagus Fern, Plumosa Fern (Asparagus plumosus) Join the Club to Manage Your Garden Plant Details; Basic Care Instructions; Detailed Care Instructions; Features. Happy autumn fern: Autumn fern with sunburn: Now, this browning due to sunburn isn’t to be confused with the normal shedding of leaves. I bought a plumosa fern yesterday and it looks healthy and every thing, I … Aged leaves turn yellow and brown so when you see one, it’s time to cut it off. Outdoors, they need protection from frost. Asparagus Fern (Asparagus seteceous plumosus) Plumosa Asparagus is not a true fern. To care for your plumosa fern, grow it in partial shade and moist, well-drained soil. Insufficient light will result in yellow needles that drop. Whether or not you should trim your Asparagus Fern will depend on what you want to get from your plant, how well it’s been growing, the size of your plant and other factors. If the tips of your fern’s fronds turn brown (leaf burn), this is a sign of over fertilizing. Asparagus plumosa ferns thrive in average room temperatures. The feathery, rich green foliage provide soft texture and a light, airy appearance. They produce large, tuberous roots that can become potbound quickly. They need bright indirect light, without full sun. I hope this helps. 1. They prefer rich, slightly acidic well-drained soil. Only water when the soil is dry down one inch into the soil. I have to be careful or they will wrap themselves around the window blinds. My favorite is the Asparagus setaceus plumosa or plumosa fern. Step 3 – Tease out matted roots and remove dying or dead roots.Leave the healthy ones. Though the “regular” asparagus fern is the most popular member of the family, there are others I like much better. Step 4 – Take a new pot and put a piece of wire mesh in the bottom.Fill up the half of the pot with well-drained organic soil. If they are brown, you are not watering it everyday. In winter, only add enough water to keep the soil from completely drying out. An easy-to-grow plant that tolerates changes in watering frequency and is very low maintenance. If there are yellowish fronds on a palm for more than three days, that is a sure sign that the palm has a nutrient deficiency. Asparagus plumosa ferns are easy-to-grow houseplants. Whole Plant Easily Wilts During Hot Seasons It will also encourage growth of new foliage. Cutting off old leaves will help maintain the plant’s aesthetic look. Keep soil most from Spring to Autumn. An old frond will go from green to yellow to brown in just three days. You know you have a problem if your fern fronds start looking funky sooner than that. Ferns usually retain their leaves for 1-2 years, and then the oldest leaves usually turn brown and die back. It’s vital to water plumosa ferns regularly and mist them to keep humidity levels high. I have an entirely different question now. If the leaves turn yellow, you are drowning it. Heart ferns will surely produce younger fronds so the old ones can finally go. Step 5 – Place the plant in the middle and gradually fill the surrounding space with potting mix. I love how the leaves (phylloclades) are flat and the plant is layered. Trim off any dead leaves and if you have one that needs trimmed back to the soil, do so with sissors. Be careful not to overfertilize as this is one of the most harmful things you can do. Asparagus ferns are not ferns at all, they belong to the asparagus family. 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