Hello Novicegrower, as has been said your salad stuff doesn't need to be in a greenhouse. It will do much better ot of there.
You still have plenty of tome to grow some beans.
They will do well in a decent size container or bucket. Put in maybe 4 canes and tie them together at the top to make a wigwam.
Plant 8 beans in there - 2 to a cane.
Keep them well fed and watered and you'll get a great crop.
And they do very pretty flowers.
Good luck.

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