Seasonal help required...
Many thanks for your recent enquiry regarding the generalization in planting times. It's always been my understanding that the seasons each consist of 3 months as shown below;
SPRING: March, April and May
SUMMER: June, July and August
AUTUMN: September, October and November
WINTER: December, January and February
If you take the first month of each season to be 'early', the second 'mid' and the third to represent 'late', you shouldn't go too far wrong. Of course, there are countrywide variations as the south west of England enjoys much warmer temperatures earlier in the year than the north of Scotland, but if you use the information above, your seed sowing and growing will hopefully be successful.