Overwatering the Plant Nematode infections create problems when the worms feed on the leaves, roots, flowers or all three of the phlox… The phlox bug overwinters in the egg stage in dead phlox stems. The owner said the same thing happen last year and this year the phloxes came back health and strong and the same thing happen. It may be hard to see because it hides on the underside of leaves. Curling can also be caused by too much light, as the leaves will try to protect the plant by curling up. The only pest that is commonly seen is spider mite, which congregates on the underside of leaves, causing leaves to curl, dry up and fall off. Why Are My Weed Leaves Curling: Causes & Solutions Ok, so there are a few different reasons why your cannabis plant leaves might be curling up, and they vary greatly. My tall garden phlox are diseased. The attached picture is of a diseased phlox leaf. I live in a dry area so the humidity in my house is normally below 20%. In conjunction with this, the newer leaves may be smaller than normal and may have brown edges. I’ll give a short explanation with pictures of each problem, plus links to the solutions! Tall Phlox - Why are the leaves curling? Plant Disease - Why are my tall phlox turning brown and drying up before flowering? Curling could be due to over watering (in lower temps the plants likely won’t need as much water). The bug feeds on leaves, stem terminals, flowers and seeds. This creates blisters when the plant's cells literally overinflate or even burst. There are several causes why marijuana leaves tend to curl up or down but do not worry because there are ways to cure them. Q. In this article, we have listed several causes of why marijuana leaves tend to curl and how to cure them. Life Cycle. She said there was some shinny stuff on the underside of the leaf which does not appear in the picture. The tips are deformed. Oedema is caused when the phlox's roots take up too much water for the plant to use. Why grow Phlox? There is no powdery mildew present. The leaves then turn brown, curl, dry out and drop. The following symptoms are for when your cannabis leaves are “clawing” or curling up or curling down. Seeing the leaves curling or clawing means that something is seriously wrong. Fix this common (but hard to diagnose) marijuana problem today! Let’s go over the 6 main causes of curled up weed leaves, and what you can do to remedy the problems. Question: What do I do if the edges of my cannabis leaves are curling up? Especially when older leaves are curling at the very tips of the leaves. This could explain the indoor plants curling – try moving the light further away. Only one of my 3 plants is having this issue. The leaves were rolling inward toward the vein so that the leaves resembled green beans. Q. To fix curling leaves from too much light, move your houseplant to a location that receives more appropriate light for the type of plant that you have. Phlox are not only Rachel’s favorite perennials; they have been favorites in American gardens for well over 100 years. A friend suggested that the issue may be low humidity. It has two generations per year. I have picked some and could mail them to you if you like. They are not turning yellow or brown in the veins, but rather in between the veins. The plant may become stunted and die. Take a look. Tall Phlox/weeds - My perennial garden with several colors of tall phlox seems over run with weeds that actually look identical to the… Q. Sometimes known as “The Claw”. Leaves are turning yellow and brown, worse on the bottom. The small leaves at the very tips of the plant were quite contorted, they curled inward as well. Only one of my 3 plants is having this issue that the issue may be smaller than and! 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