From Llewellyn’s Beltane  Sabbat Essentials

Here’s a traditional Beltane divination custom that’s extremely simple. Go out into a field of daisies or dandelions, close your eyes and pick a large handful while thinking of an important long-term goal. Open your eyes and count the total number of flower blossoms in your bouquet. The number indicates how many years will pass before your wish comes true.

As an alternative you may ask a yes or no question, determined by counting the number of blossoms. An even number indicates no while an odd number of flowers indicates yes.