Leaves on tomato plants curl upward because of several reasons, including viral infections, an effort to resist the excessive moisture when the conditions are excessively cool and moist and an effort to conserve water during a dry spell. Learning to identify the signs and knowing the reasons behind the curling up of tomato leaves is the most important aspect for a successful treatment and prevention of this problem.Know More
The virus in a viral infection can be transmitted through infected transplants or through whiteflies. After the infection takes place, it may take about 3 weeks without showing any symptom of the infection, but the most common sign of this infection is the curling up and yellowing of the tomato leaves. This infection retards the growth of the plant, leading to a failure of the development of the flowers.
During excessively cold conditions, tomato leaves normally curl upward and become leathery so as to resist the excessive moisture. The condition is very common during the time of setting fruits, and it is often visible on staked and pruned tomato plants.
On the other side, the dry spell, uneven watering and the high temperatures cause tomato leaves to curl upward so that they can conserve water. However, under these conditions, the leaves do not appear to be leathery.Learn more about Outdoor Plants & Flowers
Creeping Charlie is best controlled by using a broadleaf herbicide to kill it and then correcting the conditions that allowed it to become established. Once used as a groundcover under trees, this plant is invasive and detrimental to lawns. Also known as ground ivy, it spreads by seed and through stolons, which are stems that form new roots. Spraying with borax kills the plant in some areas.Full Answer >
Prune tomato plants by sterilizing pruning shears, selecting the limbs to remove and snipping the extra foliage. While the plants fruit without pruning, the process helps to prevent disease and produce earlier, larger fruit. Do not trim determinate tomatoes that produce all their fruit at once.Full Answer >
Tomato dry rot, also called blossom-end rot, is the sign of a calcium imbalance, according to Gardener's Supply Company. The condition frequently occurs when the plant starts out in wet soil that later becomes too dry, interfering with calcium absorption.Full Answer >
Tomato plant blight is caused by fungus spores that live in infested soil and plant residue. It can also be caused by a nitrogen deficiency in the plant. The best remedy for blight is prevention, because once started, the blight can be hard to control.Full Answer >