My Polka raspberries have some ripening fruit that are partially white. This is known as White Drupelet Disorder and can be caused by hot sun on ripening raspberries. Apparently, it can also be caused by other problems but as my raspberries which are in the shade of raspberry leaves have not been affected, I think we can pretty much assume that the problem is caused by the sun. It seems that the fruit is still edible. Poor Polka has also been attacked by
rust disease this year. I shall blame the weather for all which ails it. I still think Polka is a fantastic raspberry to grow.
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| White drupelet disorder on Polka raspberry |
A drupe is a fleshy, thin-skinned fruit that is formed around a central stony shell which contains a seed, e.g. plum, peach, olive, cherry. Also an
almond is a drupe (Wiki link). Drupelets are a number of small drupes which together form a fruit such as raspberry or blackberry.
