Bests & Worsts Reviews from Amazon

Bottom line: Espoma's seed starting mix resulted in lower germination rates and seedlings which sprouted more slowly than those grown in Black Gold's seedling mix. Black Gold is a better organic seed starting mix if your goal is germination. More details: I started marigold seeds, half with Black Gold (which I have also reviewed) and the other half in Espoma's seed starting mix. They were subjected to the same conditions indoors under fluorescent lights. The seeds in the Black Gold mix started growling in just 3 days, while those in Espoma's mix were 1-2 days behind. The germination rates for Espoma were also ~30% lower. Update 3 weeks later: the seedlings are now outside enjoying the sun. Those on the left were planted in Black Gold, while those on the right were planted in Espoma's seed starting mix. I planted almost twice as many seeds to get enough marigolds in Espoma's mix in the end, but once they germinated, the seedlings took off! I've now had to add fertilizer to those grown in Black Gold, in the hopes of improving their growth so they can catch up. Keep in mind that you will need to fertilize if you choose Black Gold.