The pussy willows push their fuzzy noses out in winter. Some are even showing in autumn. But the yellow pollen is not seen on these flowers until the catkins are full grown, and they wait till winter is past. They dare not risk a frost.

Among pussy willow trees there is a difference in the catkins. On one tree they turn yellow when mature; the golden pollen dust rises in a cloud when the twig is disturbed. These catkins soon fall off.

On other trees the catkins are greenish, and they stay on after reaching full size. They are the fertile flowers, which develop into seed pods. Pollen brought to them by the wind or by visiting insects in search of nectar, insures the setting of seed in these flowers. Though the gayer flowers fall, they are quite as necessary to the making of seeds as the fertile ones. In all the willows and poplars, it requires two trees, bearing the two kind of flowers, to make the seed. And the wind and nectar-seeking insects are necessary as pollen-carriers.

The winter flower buds, the blossoms, the full-grown winged seeds, and the ribbed leaf of our American elm

The majestic, fan-shaped elm blossoms while snow is still on the fields

In marshy land, or by a brook or river, or even just outside the window at home, there is a tree that turns rosy in March with a multitude of small red flowers clustered on the sides of its twigs. It is the swamp maple, the red maple, the river maple, the scarlet maple. Two of these names tell of the tree’s thirst; two name its colour when in blossom, and also when the leaves change colour in autumn.

Each flower is a red bell, for the petals are red. One has a red forked pistil thrust out; another lacks a pistil, but has a cluster of yellow stamens. One tree may be deep red throughout, having only pistillate flowers. Another may have only staminate flowers; it will be orange coloured, by the blending of the colours of the yellow stamens, and the red petals. Another tree may have flowers of both kinds. Occasionally flowers will be found that have both stamens and pistils.

The bees are in the scarlet maples at the first loosening of the bud scales. There is nectar in those flower bells. The colour and a faint fragrance tell this secret. From pollen flowers the busy insects carry the golden dust to the forked pistils that set seeds.