FlytrapCare Carnivorous Plant Forums

In late December, I planted some D. Capensis 'Red' seeds that I'd gotten from an Ebay seller who stated they'd been harvested in October. They had a high sprout rate, but the seedlings are growing very, very slowly. They're only 2mm across.
In early January, I planted some D. Capensis 'Alba' seeds that I'd gotten from a user on here. I don't have a harvest date, but it was presumably very recent. Those seedlings vary wildly in size, from 2mm to almost 10mm, but have a much higher average size than the Reds. The Reds just don't seem to be thriving, even a few I've transplanted into the same pot as some of the Albas.

So is this due to the seed freshness? If not, what else could have caused it?

I'd think they would have overcome the initial struggle now that they have roots down, though.

I have another batch of seeds that I got from the same seller, D. Capensis 'Typical', and they're also much smaller than the Albas I planted later.

Do Albas just grow faster, maybe?