Honesty. See [Lunaria].
Honey-Locust. See [Gleditschia].
Honeysuckle. See [Lonicera].
Hop. See [Humulus].
Hop Hornbeam. See [Ostrya].
Horehound (Marrubium vulgare). Labiatæ.
Seeds, in early spring. Division.
Horkelia. See [Potentilla].
Hornbeam. See [Carpinus].
Horse Chestnut. See [Æsculus].