Answer:

POLLEN

Answer	Crossword Clue
POLLEN	Common allergen
POLLEN	Summertime allergen
POLLEN	Hay fever cause

POLLEN	Flower powder
POLLEN	Bees eat it
POLLEN	Sneeze cause
POLLEN	Flower fertilizer
POLLEN	Hay fever sufferer's nemesis
POLLEN	Hayfever cause
POLLEN	... count
POLLEN	Word before count or season

POLLEN	Bee's burden
POLLEN	What honeybees gather
POLLEN	Bee's colleciton
POLLEN	What bees collect
POLLEN	Certain allergy sufferer's bane
POLLEN	Floral dispersion
POLLEN	Springtime concern for many
POLLEN	Allergy aggravator

POLLEN	Bee's target
POLLEN	Cause of some tears
POLLEN	Hay-fever cause
POLLEN	Organic relic in archaeological analysis
POLLEN	Hay fever sufferer's bane
POLLEN	Bees pick it up.
POLLEN	Cause of hay fever.
POLLEN	Mass of microspores in seed plants.

POLLEN	Means of plant propagation.
POLLEN	Ragweed's product.
POLLEN	Ragweed product.
POLLEN	Sneezer's bane.
POLLEN	Allergy source
POLLEN	Something for the bees
POLLEN	Bee's objective
POLLEN	Allergy sufferer's bane

POLLEN	Allergy stimulant
POLLEN	Bee's bundle
POLLEN	Sneeze producer
POLLEN	What's often blowing in the wind
POLLEN	It's on the bee's knees