
Don't be afraid to plant in summer. Plain and simple. People like to joke about our weather--that it's unpredictable, that there's no such thing as a 'normal' or 'typical' year, that we get more than our fair share of overcast, cloudy, rainy weather even in the frost-free months, etc. Last year, we endured 10 weeks of rainless weather, and granted, during that time, it might have been wise to hold off on planting.
But consider that most plants begin to establish themselves within a week or so after you put them in the ground. If, during that time, we have even one rain event, the chances of your plant becoming well-established go way up. Most critical to summer planting is a good initial soaking at planting time. One short cut you should never take is to skip watering a newly installed plant. It's always worth the extra effort to drag the hose over and soak new plantings. Even if you are planting in soil that's already damp, or you're gardening on a drizzly day. Soaking a new plant settles the soil around the roots, and minimizes the time until your plant's roots are taking up water from the soil directly surrounding it.