Why are my Hellfire OG plants growing slowly?

I planted Hellfire OG feminized seeds a few weeks ago, but they seem to be growing very slowly. They’re not very tall, and the leaves are small and spindly. What could be causing this issue, and how can I get my plants to grow more quickly?

Why are my Gold Leaf autoflower plants growing slowly?

I’m growing Gold Leaf autoflower seeds, and I’ve noticed that my plants are growing very slowly. They seem to be stunted compared to other autoflower strains I’ve grown before. What could be causing this issue, and how can I help my Gold Leaf plants grow faster?