Bargain plants require extra pampering to thrive
Q. Many nurseries are offering great deals on plants now that the busy season is over, and I would like to take advantage of them. Can they can survive if planted in the heat of summer?
A. Now that the early summer growing frenzy is fading, and the hot and humid days of July have blended into August with slightly cooler nights, gardeners can find great bargains at plant centers. A little pampering of any purchases will help them become established.
Some garden centers try to unload annuals and perennials they couldn't sell in spring, but others will bring in fresh plants for their inventory. Inexpensive flowers which are "leggy" may not look like much of a bargain, but they can be revived. Make sure they are not damaged with any pest infestations. Look for holes, blackened areas or spots on leaves, which can be indicators of insects or disease.
When you take them from their containers, you will probably notice a dense mat of roots without much soil attached. If this is the case, you have a root bound plant that needs a little surgery before transplanting. Just use a knife or scissors to score all around the root ball in order to break up the mat of roots. To promote more healthy growth above ground, a good trim will help. By removing the top half of the current growth (including stems, leaves and flowers), the plant will not only look better, but also will be revitalized.
Finding a perennial at a bargain price gives you a chance to try new specimens. Planting perennials now gives them time to establish healthy root systems without having to supply nourishment for a summer growing season. If the plant looks a little tired, give it some sprucing up by removing any brown leaves and deadheading spent flowers. This will promote leaf and root development.
Shrubs and trees which haven't sold during the season can also be a good bargain. Roots of plants will continue growing as long as the ground temperature is above 50 degrees. By planting these as the temperatures begin to cool, roots will still have a chance to grow all autumn and through the winter.
All plants will require plenty of water as they are becoming established and developing strong root systems in the soil. However, be sure that any water delivered to the plants goes straight to the roots. Water early in the morning to prevent disease from water that lingers. Keep water off leaves when temperatures are high. By planting at this time, you will conserve water when temperatures begin to moderate. Because of the shorter days, photosynthesis is slowed, and plants will use less water. As fall approaches, evaporation rates slow down, so water in the soil lasts longer.
Frequently check your new plants for pests that are looking for a late season treat. With the first fall frost dates in the Chicago area ranging between October 7 and October 21, you will have many days to enjoy any new purchases for your garden.
• Provided by Mary Boldan. Master Gardener Answer Desk, Friendship Park Conservatory, Des Plaines, open 9 a.m. to noon on Monday, Wednesday, Friday and Saturday. Call (847) 298-3502 or email Cookcountymg.com@gmail.com.