Red colour in foliage most probably due to frost / cold damage

Normal leaf colour change in youngest leaves

Flick Weed "Fern" type foliage, also known as "nursery weed". Control is very important to prevent widespread infestation

Twists and deformities in the taproot will lead to eventual death of plant after 18 - 36 months. These deformities result from incorrect 'picking out' or transplantation stage. Sowing seed 'direct-to-tube' is the easiest way to avoid this common problem.

Liverworts and algaes grown on soil surface
usually indicates not enough light and/or too much water. Note the long length of stem between leaves, indicating insufficient light.
Liverwort