I learned something today. I always thought that as soon as you had hardened your Tomatoes off then they should go straight in the ground – assuming there’s no risk of frost, that is. But apparently there is another factor at work, that of overnight temperature.
Apparently, you’re looking for a consistent temperature of not less than 55F (12C) at night. If the temperature is lower than this then the plants may not set fruit and it might actually set the whole plant back.
I find Metcheck to be pretty good for in-depth weather reporting (in the UK at least). It seems that the temperature is still fluctuating to lows of 44F ish or even 38F here in the sunshine state of Bath. But that next week is showing a consistent night temperature over 55F.
So home-sown Tomatoes will stay tucked up under fleece for now. But next week, who knows, they might find themselves in the ground.
How are your Tomatoes doing? Any tips on other factors that affect when to plant out?