- Tue Nov 27, 2018 6:51 pm
Basically you just need to consider their place of origin. If it comes from a place with a distinct winter, then chances are it will need stratification. This is an adaptation to keep seeds from germinating in late fall and then freezing before they have a chance to get established. (In the case of annuals, it assures that they can mature and produce seed before the freeze comes, but I can’t think of any temperate annual carnivores right offhand.)
One seeming exception would be the warm temperate Pinguiculas; it might seem odd that they don’t need stratification while the pitcher plants that share their same regions do. The reason is mainly that they mature their seed quite quickly/early (as opposed to pitcher plants, which take an entire season), so the plants have plenty of time to get established.
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