Yellowmorningglory foliage can be caused by a few different things. Morningglories are, for the most part, hardy plants that can grow in a variety of conditions. Move it too far out of the plant’s comfort zone, however, and it will not be happy. This is usually evidenced by yellowingleaves. Goat's Foot MorningGlory. Hidden on the beach down past the fence next to the ruins are these incredible vines. Because of the shape of the leaves they are called Goat's Foot MorningGlories. If you look inside the flower you will see a star. Most of morninggloryyellowleaves cause byCool nighttime temperatures and frost. Sometimes its lifespan is almost up is a natural sign. Unless you bring your MorningGlory plant inside to overwinter. Several vines have turned purple and the leavesyellow and not thriving. The only bug I found was a praying mantis. Morningglories are my fave and this is discouraging. Also, no. MorningGloryLeaves: Problems and Pests. Though mostly care-free and healthy no matter where it is planted, that doesn’t mean that this plant never has problems. No matter what causes yellowleaves on morningglories, it is always a sign that something is wrong with your plant. How to Propagate Mexican MorningGlory →. YellowLeaves. Yellowleaves aren’t always a reason to panic, and can be a normal part of a plant’s life cycle. Unless brand new leaves are turning yellow or all the leaves change color at once, it’s likely j... Morningglory plants may be turning yellowleaves due to overwatering, nutrient deficiencies, or inadequate sunlight. Check the soil moisture, provide balanced fertilizer, and ensure they receive enough sunlight to help address the issue. But when their leaves start to turn yellow, it can dampen the plant’s vibrancy and signal health issues. I’ve noticed that yellowingleaves in morningglories can often be attributed to common problems such as watering issues, soil conditions, or the presence of pests and diseases. YellowingMorningGloryLeaves. Yellowingleaves often indicate environmental stress or nutrient imbalances. Both overwatering (suffocating roots) and underwatering (dehydration) can lead to yellowing. Allow soil to dry slightly between waterings. Morninggloryleavesyellowing and wilting.MorningGlory Rust – yellow powder on back of leaves – Identified ... Why Are My MorningGlories Drooping? - My Garden Idea.