Leaf Curling on Houseplants. The potting soil needs to dry out slightly between waterings but shouldn’t be allowed to dry out completely or you will see yellowing in the leaves. Cannabis Leaves Curling Down: Over-fertilization as the Cause A clumsy proposition when it comes to nutrients is injudicious. Can you help? I live in Sac CA, zone 9A according to the USDA. When leaves are uniformly green, open, upright and growing vigorously, your plants are well-cared for and healthy. Too much amount of nitrogen-rich vegetation sprout base nitrogen, phosphate, and potassium or any of the micronutrients may be the grounds of clawing in foliage. The light is approximately a foot from the top of the canopy. This virus can be spread by both insects and your hands, so it is important to whip out infected plants quickly, using something disposable like a sheet of newspaper to hold the plant. A potted or container grown plant with yellowing foliage could indicate too much or too little nitrogen. Keep reading to learn how to avoid these mistakes and what you can do to solve drooping lavender: 1. To make Dr. Fusco's gentle dandruff remedy: Wet hair with warm water and towel dry. I don't see any sign of fungus or loss of color in the leaves or any leaf drop. 1 Response. Several things cause curling leaves on houseplants, including improper care and insect infestations. In this guide, we will look at these causes and remedies for curly marijuana leaves to ensure your plants grow healthy and produce a high yield. Lavender leaves turning yellow are indicative of different things depending on planting conditions. Both lavenders that I am growing were planted in containers with holes, rocks in the bottom of the pot, and used an organic potting mix My first lavender plant was a Spanish lavender I got at a grocery store. While some lavender varieties naturally have silver or grayish-green foliage, the most likely cause of gray leaves … The leaves on your plants are trying to tell you something. If, however, the foliage is wilted, spotted or in any way less than robust, your plants are likely to be suffering from a pest, disease, nutrient deficiency or other problem. Figured it was a sign the roots had hit all sides, as mine do this in 16oz cups around the time I have to water every day (6-7th node). Lavender is native to the Mediterranean and likes to stay on the drier side, as opposed to some plants that prefer their roots to stay moist. It was pretty much full grown. Lavender can't tolerate wet feet and will rot or develop fungus problems when soils don't drain. Jefferson County Colorado. Yellow leaves for those plants grown in the ground usually means a moisture problem so humidity and drainage need improvement . The leaves will begin to turn yellow in patches and then curl up into contorted shapes. The leaves starting curling under (tip down), and now the leaves have died. Overly fertile soils (or the addition of fertilizers) will stimulate foliage growth and promote a leggy, drooping lavender that displays few flowers. I use the GH Micro, Bloom, Grow and Diamond Nectar. Curling down of cannabis leaves is mainly caused by nitrogen toxicity, overwatering, bad soil, extreme temperatures, genetics, and windburn. Tahiti Allen Well-Known Member. Supposedly a good climate for lavender to thrive. The one liability lavender does have is an aversion to wet, clay soils. Just like the titles says, the tips of my leaves are curling down. I always get curling down leaves.. As with any diseased plant material, the best thing to do is burn it. I'm in the 4th week of veg. I run a 48" 6x54w bulbs 65k 18 hours a day. There are a a few possibilities to explain the leaf curl and death. 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