Why it seems my pine seedlings stopped growing? I sowed them in august ,but now it seems i havent seen any growth. Do seedlings grow at winter or only start growing in spring? I keep them near the window the temperature often at room around 19c to 21c. The soil i used just ordinary that i found in garden store not specific for conifers. I water them everyday once. I sonetimes use led lamps for plants blue+red lights mostly for 8 hourse, but havent noticed it helps anyway.