Gardening Oops – GOOPS – September 2009
September 1, 2009. Another month has passed which means it's time for me to share another of my Gardening oops – GOOPs for short.
September 1, 2009. Another month has passed which means it's time for me to share another of my Gardening oops – GOOPs for short.
I have just one question for anyone who has never planted moonflowers (ipomoea alba) – what are you waiting for? Yes, in northern gardens they take some time to flower, and yes, they must be started indoors to insure adequate time for flowering before frost, but just look at the rewards. The five-inch diameter blossoms in this photo opened last night and remained open into the cloudy morning – a few smaller blossoms had opened over the previous three nights – and the vines are covered with buds ready to open.
You know … the unattractive white powdery-looking spots that seem to appear from nowhere during mid- to late-summer? These fungal spots begin on lower leaves and can quickly spread to cover leaf surfaces of entire plants. Lilacs, phlox, bee balm, asters, dahlias, cucumber and summer squash are all susceptible, particularly if the plants do not have good air circulation (a problem I plant to avoid). Not liking to spray fungicides, I've tolerated powdery mildew for years. But when cleaning up paperwork this past winter, I found a note I had jotted down, likely while watching any one of gardening shows I try to take in during cold weather months. The note said: powdery mildew; 1 part milk to 9 parts water; spray 2x weekly.
It's nearly fall planting time in the Northeast – a time when gardeners seek out container plants to fill in holes in perennial beds or plant trees, shrubs, and new beds. But a recent study, reported by the Weed Science Society of America, suggests we need to be cautious of what could be hitching a ride with any container plants we buy. The study, done in Alaska, examined container-grown vegetables, herbs, perennials, and woody trees and shrubs purchased from 29 nurseries supplying Alaska gardeners and landscapers. Over a two-year period, 54 weeds or invasive plants were incubated from the soils in the purchased containers. Of the 54 weeds, only 3 were native to Alaska.
We're at mid-August and summer heat and humidity has finally hit Connecticut. Now's a good time to discuss a few watering and water conserving techniques. Soil dries quickly in 90+ degree heat so it is really important water container plants daily. If you must water at night, make sure you only water the soil – not the plant. The same goes for any plants sunk in the ground. Spraying plants – and grass for that matter – at night only creates an environment for fungal diseases which like it hot and wet. The current humidity level in CT is more than enough to encourage such plant diseases – don't add to this by watering plant foliage late in the day. It is really best to water plants in the morning, and might be worth the effort – especially if you want healthy looking plants throughout August – to get up a little earlier so you have time to water.