Beginning gardeners are warned against a mistake that can make all their efforts in vain at the beginning of the sowing season.
We will tell you which folk advice you shouldn’t trust and what science says about it.
Sowing cucumbers
When sown early (in February), cucumbers overgrow, the stems become thinner by 40% (data from the Russian State Agrarian University-Moscow Agricultural Academy). Without additional lighting and a greenhouse, the plants die after planting.

And the folk method of sowing in sawdust, supposedly to speed up growth, leads to the sawdust taking away nitrogen, causing chlorosis of the leaves.
Sowing marigolds
February sowing leads to the elongation of stems without buds, and additional lighting with lamps in the "24/7" mode disrupts biorhythms and plants do not form flower stalks.
Sowing pumpkin
Plants may die during transplantation due to their fragile root system. If you sow pumpkin in February, its stems may grow considerably by May, but after transplantation the seedlings will rot.
Reviews from gardeners
"I planted cucumbers in February - by April they were like vines, but after planting they dried up. Now only in March!" - Alina , "Garden Chronicles" group.
"Marigolds without flowers are a waste of time. I sow them in April now," - Lyudmila , "Flower Paradise" forum.