6. House flies arrived.
7. Apple-trees in full flower.
8. Lilac in full flower. Red-headed woodpecker arrived.
15. Rye (Secale cereale) beginning to head. Pleasant days and cold nights. Hard frosts for a few nights past.
18. Honeysuckle (Azalea nudiflora) in full flower.
19. Small red rose in flower. Choke cherry (Prunus Serotina) in full flower.
25. Common red clover (Trifolium pratense) in full flower.
26. Garden peas in full flower. Hummingbird arrived.
27. Night-hawks arrived.
30. Sugar-maple in flower.