What's weird is I planted PH's on one end of my garden and Zipper peas on the other. The PH's never did anything - finally gave up on them as they were getting weedy but the Zippers are doing great. I've already picked them 3 times and they are pea making machines right now. Go figure - I like the PH crowders better for flavor but zippers were always my dad's favorite. I still plant them in his honor - he's the one that got me into gardening in the first place. For sure it wasn't dry weather for mine - if anything they got drowned too many times.