The most common gardening mistake – sowing or planting too early in the year
This is the most common mistake we all made or still make. With the exception of a few vegetables the majority should only be sown/planted from April or May onwards. Sowing too early often means poor or no germination (each crop has an optimal germination temperature), poor growth and more pests and diseases.
A soil thermometer is an excellent gardening tool to optimise your success.
The obvious exceptions for early planted crops are early potatoes (planted in mid March), onion and shallot sets (planted from mid March onwards), garlic (February to March at the latest), broad beans (February to early April) and Jerusalem artichokes (planted March).