Thorndale ivy--also known as hedera ivy--is known as the hardiest of all ivy plants. The foliage is green with lighter green veins. The plants are dormant during the winter, and the leaves turn a reddish color during this time.
Thorndale ivy is used in several different ways. It can be grown as a vine, ground cover, or inside the home. The plant can be trained to vine up lattice work or walls. The thorndale is a popular plant to train to vine up and around arbors and pergolas.
Thorndale is a popular groundcover plant because of its ability to spread so quickly. The plant sends out runners, which attach to the ground. Indoors, the thorndale ivy can be grown in containers. They are shade-tolerant plants, and do well in a home with full or filtered sunlit windows.
The thorndale ivy, if grown as a houseplant, will grow to a height of about 1 foot. The rest of the growth will cascade downward. As a vine or ground cover, the runners can grow several feet in length, easily reaching as tall as the side of a house.
Thorndale ivies prefer rich, organic soil. They are very adaptable, however, and will adapt to any soil that they are planted in. The thorndale even flourishes in the hard, sandy clay soil of south Texas.
Thorndale ivies are propagated through division or cutting. Strong, established plants can be dug up and divided in the spring. Divide by laying the plant on its side, and cutting the entire root ball in half. Cuttings can be rooted in potting soil or in a container of filtered or rain water.
The thorndale--like all other ivies--are very invasive. They will choke and kill small and weak plants in the area. Their rooting structure makes it very difficult to control once it has begun to spread in your yard. Avoid planting directly into the ground unless you plan to use it as ground cover. Contain the ground cover with gardening borders. Vining thorndales should be trained up a trellis, and trimmed regularly. A thorndale that is not trimmed will wander away from the trellis, and anchor itself to the side of your home.