Simplify the following text for a Grade 5 native English-speaking person.
Original: The male cones are small , typically 1 â `` 5 cm long , and only present for a short period ( usually in spring , though autumn in a few pines ) , falling as soon as they have shed their pollen .
Simplified: The male cones are small , typically 1 â `` 5 cm long , and only present for a short period , usually in spring . They fall as soon as they have shed their pollen .