I planted the french marigold together with the lavender and sweet alyssum at the same time. It has been about 2 months. The french marigold has growth but the lavender and sweet alyssum doesn’t seems to be growing. What is wrong with the lavender and sweet alyssum? Please advise. Thanks.
It seems that your Lavender and Sweet alyssum are not getting enough light, since French Marigold is much more faster growing plant.
Also, your lamp setting concerns me. It is strongly recommended to start pods with one lamp arm. If the lamp is set too high it promotes stretched growth and the plants grow leggy.