[Salmo]

I found this on the web. That explains why squashes are slow compared to courgettes and why you should wait for the soil to warm up in the Spring.

Vegetable	-	Minumum Germination Temperature
Aubergine	-	21C / 69F
Broad Bean	-	8C / 46F
French Bean	-	12C / 53F
Runner Bean	-	12C / 53F
Beetroot	-	8C / 46F
Broccoli / Calabrese	-	8C / 46F
Brussels sprouts	-	8C / 46F
Cabbage (summer)	-	8C / 46F
Carrot	-	8C / 46F
Cauliflower	-	8C / 46F
Celeriac	-	10C / 50F
Celery	-	10C / 50F
Chili Peppers	-	18C / 64F
Chinese cabbage	-	8C / 46F
Courgette	-	13C / 55F
Cucumber (Outdoor)	-	13C / 55F
Cucumber (greenhouse)	-	21C / 70F
Kale	-	8C / 46F
Kohl Rabi	-	8C / 46F
Leek	-	8C / 46F
Lettuce	-	8C / 46F
Mangetout	-	10C / 50F
Marrow	-	13C / 55F
Onion	-	8C / 46F
Parsnip	-	8C / 46F
Peas	-	8C / 46F
Peppers (Sweet/ Capsicum)	-	18C / 64F
Radish	-	8C / 46F
Salsify	-	8C / 46F
Spinach /Leaf beet	-	8C / 46F
Squash/Pumpkin	-	18C / 64F
Swede	-	8C / 46F
Sweet corn	-	12C / 53F
Tomatoes	-	18C / 64F
Turnip	-	8C / 46F

[gillie]

Interesting, but no great surprises there.

How about maximum temperatures?  It is often said that lettuce will not germinate over 20 deg. C.  I experimented with this during my germination trials a few years ago, and discovered that my lettuces would germinate easily a few degrees higher.

Cheers,

Gillie

[Salmo]

If you really want to know try this

http://tomclothier.hort.net/page11.html

[aelf]

That explains why my toms were slow to germinate! next year, I'll put them by my OH, she's full of hot air, that should do it!

  in for it now!