In general they tend to turn faster in warmer/sunnier conditions. Which is why you can pick big greys on north slopes at season's end. Most times unless it has been real cloudy/misty on other slopes the sun gets to them. Just my observations from leaving dozens of patches to grow over the years. Its hard to leave them now, to many pickers, but up till about 15 years ago it was pretty easy in some spots. And I still do in select spots. sometimes they just rot fast, sometimes they get huge. Real hot days and nights blows them up like you would not believe at mid season and beyond.if its wet. Be interesting to see how those in the picture turn out if left to grow a week. Spray them with distilled or rain water if they start to dry. Hard to believe they grow at all at 34, wow. Are they catching sun?