WebAphids, or plant lice, are small, green, pink or mealy-white insects that attack many plants. Aphids may appear on iris plants in early spring. They pierce leaves and suck the juices. When they feed, they may transmit the virus that causes iris mosaic. Control - To kill aphids, spray plants with malathion. Repeat if aphids reappear. WebJun 15, 2024 · Use a sharp knife or garden pruners to cut take off the entire stalk at the base, all the way down to the rhizome, says White. Do not cut off the leaves, which still are making food. But in late fall after a frost, cut back the leaf fans of bearded irises with …
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WebMar 12, 2008 · If you are dealing with plants in an established bed that will not have other plants growing from seeds there, then this is the product for you. Irisloverdee. 10-10-10 or 15-15-15 – 10-10-10 is the basic garden … WebBulb irises. The bulb irises are easy to look after and rarely need watering when growing in the ground, unless the soil dries out during prolonged dry periods. Give them a light feed with a granular general plant food after flowering. Watering with a liquid plant food after flowering and until the foliage starts to die down will help build up ... teacher heaven houston tx
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WebJan 29, 2024 · Download Article. 1. Understand that irises require sunlight to bloom. A lack of sunlight will prevent irises from blooming to their full potential. These plants require at … WebIris borer caterpillars ( Macronoctua onusta) are the most destructive insect pests of iris. The caterpillars chew holes into the leaves and tunnel all the way into the rhizome. The tips of iris leaves turn brown and seem to be … WebAug 23, 2024 · Caring for Your Irises. 1. Avoid cutting the foliage after the flowers die. It's very important to leave the green foliage on the plant after the flowering ends. This is … teacher heaven closing