The other possibility is normal browning because of … An asparagus fern's (Asparagus spp.) Brown Leaves on Ferns. Why is my Boston Fern Turning Brown? My foxtail fern have never done this before -- it's not a matter of removing dead/dying foliage -- all of the fronds on all of my plants are turning brown -- not just old, new, or in-between fronds -- all of them -- they have received the same care/water as in the past but suddenly the fronds, whether mature or just coming up, are turning brown. The leaves are turning brown, not one at a time, all together, and then dying. I have several large tree ferns that are dying. Ferns need surprisingly high light. You can revive most damaged ferns if there's some green left on them. Underwatering has the same symptoms for the same reason, the roots can supply the growth with water. Most plants die from overwatering, root rot. Hi, Hi Liz, The brown fronds on your Boston Fern could be the result of over-watering. Cats and dogs – especially young animals – often nibble on houseplants. naturally green, ferny foliage typically turns yellow for two reasons: insufficient fertilizer, or if the plant isn't getting just the right amount of light.Lacy and delicate-looking, asparagus ferns grow outdoors in warm climates or as houseplants elsewhere. Pests. They have been here The non-pupping species gets it water by spreading the top of it shield to collect water. They don't like being brought inside for the winter, as most houses are very dry indoors in the winter because of the furnace. The non-pupping species gets it water by spreading the top of it shield to collect water. When it feels dry to touch, water slowly and deeply. They mostly cannot tolerate intense sun for the whole day outside, but behind glass, which cuts 50 percent of it, they could probably take straight indoor sun, just not too close to the window. The leaves are turning brown, not one at a time, all together, and then dying. Too much ‘salt’ will do the same (hard water, over fritilization). They do best in moist soil. They have been here This combination of needing bright light and very consistent moisture makes them tricky, but raising the humidity helps. The leaves on the ferns are turning brown and dying. You may see brown tips on garden ferns if the soil becomes too dry. Many species of Platycerium shield fronds turn brown after they mature. You’ll learn what causes brown tips on fern leaves and how to correct the problem in this article. Not enough light: If lower leaves start turning brown or yellow, the plant might not be receiving enough light.If the discoloration is isolated to the side of the plant away from your light source, it's probably too little light. I have 2 types of java ferns that I stuck into a piece of driftwood, and a couple weeks later are turning battle brown and have holes in them.