Answer: The swellings are developing seed pods which may or may not contain viable seeds. It's always a good idea to cut back the spent flowering stalks on glads rather than leave them on the plant. Cutting them off will channel the energy back into the corms for next year's bloom. Leaving the stems on will encourage the plant to produce seed, at the expense of stored energy. Cut back the stalks but allow the foliage to wither and die back naturally. Your glads will produce new foliage and flowers next spring.
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