We also have a greenhouse here next to the North Sea in The Netherlands. Mine is for tomatoes. This year I set our 6 inch plants April 15th and got the first ripe tomato August 15th. Now, Oct. 9th I have just pulled the plants and the green tomatoes are ripening on the kitchen table. I pulled them because of a freeze warning. So yes, it is getting cooler now, but I, too, enjoy a cozy sweater.
