Seeds.
Pulmonaria. See [Mertensia].
Pumpkin (Cucurbita, three species). Cucurbitaceæ.
Seeds, when the weather is settled.
Punica. See [Pomegranate].
Puschkinia, Adamsia. Liliaceæ.
Increased by dividing the bulbs, which should be done every two or three years.
Pyrethrum. See [Chrysanthemum].
Pyrola (Shin-leaf, Wintergreen). Ericaceæ.
Propagated by division; very rarely from seeds.