My biggest problem (besides weeds, drought, etc.) is deer. I live in the woods. For the first time in years, my perennials are actually still thriving in July. I don't know what the problem is; normally by now the herds have sheared them off, and taught their fawns that perennials of all sorts are their natural salad bowl. This year, nada, tho I've seen does and fawns out in the woods.
Whatever the reason, I'm not complaining! Some of the flowers I have blooming this year have never even made it to bloom time before the foliage was eaten to the ground. 
Irulan, I'm kinda guessing you don't have deer issues?! 
Emily
Emily
2011 Jamis Dakar XC "Toto" - Selle Italia Ldy Gel Flow
2007 Trek Pilot 5.0 WSD "Gloria" - Selle Italia Diva Gel Flow
2004 Bike Friday Petite Pocket Crusoe - Selle Italia Diva Gel Flow