I would think that most plants are acclimated to climates with seasons. Doesn’t the eternal spring/summer conditions interrupt some type of annual cycle?
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It would be a problem for seeds and other unsprouted plants. Many seeds from temperate zones (ones with winter and summer cycles) tend to need that freeze thaw to activate the process that causes them to sprout. In fact, you need to place some seeds in the refrigerator for a month or two before you plant them.
However the plants themselves often don’t need the freeze thaw cycle to grow and thrive. Most of the time they use the relative abundance of sunlight in the summer or lack thereof in the winter to determine when to grow and bloom and when to cut back and store energy.
Depends on the plant, really. Some plants tell time by photoperiod. If they’re in sunlight, it doesn’t matter whether they’re indoors or out; they know when the seasons change. Others operate based on their own age, independent of the seasons. They’re gonna do what they’re gonna do, when they’re supposed to do it.
Plants that tell time by temperature might get confused, and not be able to go through their own flowering/seeding cycles as they’d expect to. But eventually, the stress of not flowering is going to push them into flower at unexpected times.
Many popular houseplants are native to tropical / equatorial areas that have very little change of seasons.
Most indoor plants are tropical varieties of plants, that don’t really experience 4 traditional seasons, but instead do experience fairly constant temps year round.
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