Flies in the greenhouse.

k66yla · Post by **k66yla** » 29 Apr 2009, 11:35

Opened up the greenhouse this morning to water the veg and discovered a lot of large black flies which I have found out are called 'St Marks Fly' (is'nt the internet great )t'

). Will they damage my veggies? Apparently they only live a couple of weeks but I don't want to find in 2 weeks all my hard work raising everything from seed has all been destroyed.

lancashire lass · Post by **lancashire lass** » 29 Apr 2009, 11:40

Had to look it up myself - apparently it is one of the good guys, pollinating fruit trees & flowers. The larvae feed on grass roots so your greenhouse plants should be okay. I'd be wary of sweetcorn in there but all else are fine.

http://www.plantpress.com/wildlife/o368-stmarksfly.php