Didn't know about carrots and beetroot - will try those today, damn pigeons have scoffed all my lovely multi coloured lettuce so i'll try them again too. really warm to day and wet so they should get a headstart
Get all your seed packets and make a spread sheet list of crops & when to start & latest sowing for a crop
Realise these times are usually for Derbyshire , as it's nigh on middle of the UK add an extra 14 day to start & to finish date if you are below or close to the M4 corridor and if you live above or close to the A66 take off 14 days before & after the suggested times as it's usually a lot cooler .
I set up my sed lists 16 yr more years ago and each year update thiungs I made an excell planner that indicated each wek from jan firtst toll first wekm nof NOV running across the page then add the =crops in in alphabetical order going down
on any given wek I can readily see if I either need or can make sucessional sowing of a few more seeds so that over the cropping year I get as many spaced crops as possible .
Rather than massive gluts like when in our early days together ( Alison had never done gardening nor did any of her family ) Alison sowed a whole pack of 1,000 carrot seeds in a six foot long row and two packs of kohlrabi in the adjacent row to them .
You can also give yourself an amazing head start by cutting up inch squares of kitchen towel , laying them on the lid of a Pyrex dish and wetting them well.
Then pop a single seed in the middle of each square . Put the rest of the dish on upside down and slip it in the airing cupboard .
So long as there is a reasonable heat in the airing cupboard the seeds will l get optimum germination in a very shortened time .
Check the dish each day first thing in the morning , as soon as you see the seeds have germinated , set the seedling complete with the square of paper towel in a pot of fine sieved compost & cover to a depth of to a depth of 1/4 " .
Then water them with room temp rain water that's had one drop of tomato feed or Baby Bio added to a single pint of the rain water . You only need a very weak amount of feed just to ensure that the germinations have all the nutrients needed to grow on , ready for planting out in a week or so's time .
Place the potted seedlings out in a sheltered sunny area but not in a sun trap , water them gently each day early on and as soon as the sun starts to go down . In a few days you'll be able to use a dessert spoon and scoop out each plant and pop it in a prepared hole .
If you use the Mychrozial ( sp ?) fungi pellets in each planting hole as advised these new plantings will develop amazing root balls and grow like hell .