Petunias are naturally sticky, and some varieties are stickier than others.  As nasty as they feel, some think that the combination of somewhat fuzzy  leaves and the stickiness help to trap insects that might harm the plant.  This very hot weather isn't helping your poor petunias, either. Petunias don't bloom well in high temperatures. You may want to get them in a little more shade until the weather cools down.  Overwatering can cause petunias to get "leggy.'  Your baskets will benefit from monthly fertilization, too. If your plant is very leggy, you may want to shear it back once the weather cools next week. You can either pinch the stem back to the largest developing bud, or shear each branch with pruning shears about halfway between the base of the stem and  the tip. This will encourage new bushy growth and flowering.  Hope this helps!

Thanks so much for your fast response, Alice! I am encouraged by your suggestions. I will follow what you say and place them in more shade for the next week, then shear them back for more blooms.   Do I need to cut back on watering (every other day right now in the 90's) or fertilizing? ( have fertilized them about every 10 days).   Thanks again! 

Try to keep them evenly moist.  If you put your finger into the soil about 3 inches and the soil is damp there, then that's right where you want to be.  It's hard to keep potted plants evenly moist in this heat.Good luck!  You may be over-fertilizing.  If the "N" nitrogen component of your fertilizer is too high, you'll get lots of green leaves and few flowers.  A nursery operator who grew amazing flower baskets told me several years ago that he uses a soluble fertilizer (dissolve in water) that is formulated specifically for blooming flowers once a month, and adds those time-release bloom booster granules in between.  If you decide to try that, follow the directions on the fertilizers very carefully.