I would like to plant ivy at my grandmother’s house with the objective of covering one wall and then using another type for a lattice. What kind of ivy is suited for the outdoors as well as heat and drought? I would like varieties with light-green leaves, that is, apple-green leaves, not dark-green leaves as the English ivy. Caracas, Venezuela
First let me say how nice it is to receive a question from a gardener from South America. It is evidence that the love of gardening can be shared across languages, cultures and climates!
From what I understand Caracas has a mild climate with an average high of 80 degrees F and an average low of 70 degrees F. The rainy season runs from May through October, but it is fairly dry the rest of the year.
Ivy prefers partial shade and soil that is humus rich, fertile and moist but well drained. Given the climatic conditions of your region it should thrive, but you may need to provide water during the dry months. Water thoroughly and then wait until the soil dries to water again.
Before I get into the details of selecting an ivy for your garden it is important to understand that here in the United States traditional English ivy, Hedera helix, has been classified as invasive. Invasive plants are those that take over surrounding habitats, choking out the native flora. English ivy spreads by seed and little pieces that break off and root in the ground. So to avoid creating a nuisance for yourself, I recommend that you stay away from traditional English ivy. Many of the newer cultivars and variegated or pointed leaf forms are much better behaved and with good gardening practices you shouldn’t