Answer: It's odd for winter-flowering bulbs to begin producing foliage in late summer, but it's not unheard-of. For some reason the bulbs thought they got a long enough chill, and now are producing foliage. Leave the foliage until it yellows and withers naturally. The leaves manufacture food for the bulb and help it store energy for next season's burst of color. The foliage from your bulbs may grow to maturity, and the bulb may wait until later in the year to produce blooms. Or, you may get some off-season blooms. Either way, the bulbs will eventually get back into the proper blooming cycle.
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