I replaced the cover on the mini greenhouse in the autumn - it had split, but had lasted three years, so no complaints here.
Generally, I leave the 'door' unzipped & up - I figure it still keeps the worse of the cold off whatever is in there, it soon gets full of condensation in the morning, & I really can't be bothered with whipping the top up & down each day.
However, the weather this winter has been so exceptionally cold, that I've left the new cover zipped down to give extra protection to the one or two bits in there.
It turns out that I should have kept a rather better eye on it though - as a revolting sight greeted me last weekend when I finally opened it up in order to move a tray of onion & leek seedlings in there.
The pumpkin has not survived the harsh winter, & deflated - sort of composted itself. The stuff in the tray on the bottom shelf was like primordial soup, & left much long would have spawned new life forms, I am sure.
After cleaning that lot up (noticing that the rudbekia seedlings kindly sent by Vegetable Heaven are looking perky too - despite pumpkin goo everywhere), I got the compost out & sowed pots of LETTUCE (hsl bath cos), LEEK (saved), SPRING ONION (apache), BROAD BEANS (violetta) & a root trainer tray of sweetpeas.
Gearing up for the new season!