Answer: Actually, different types of seeds should be started at different times, and some do best when sown directly into the garden, rather than starting them indoors.
Beans are best planted directly into the garden, once the weather has warmed up. As you've seen, they are fast growers. I'm afraid the ones you started indoors will be too large and unwield to plant outdoors. As far as I've seen, there's no benefit to planting certain types of seeds indoors, because the ones planted directly in the garden catch up and pass the weaker, indoor-grown ones.
Wait until after the last frost date to sow the beans. They are heat-lovers, and they don't do well in cold soil. Some other plants a that are best direct sown are peas, nasturtiums, carrots, corn, and sunflowers. Squash-family vegetables are also fast growers, and can be direct sown. Or you can start them indoors just 3 or 4 weeks before the last frost date.
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