Pods are technically the hard case or shell that make up the outermost layer of a seed. All known plants classified as herbs can grow from seeds, but that doesn't mean that all herbs propagate well by seeds. This is doubly hard when trying to select herb seed pods that will grow well in window gardens because of the limited soil available to the herbs.
Chervil is an annual that closely resembles parsley. It grows up to 2 feet in height and forms a loose cone naturally. It has low nutrient needs, but requires moist soil and half-shade year-round. Any attempt to transplant it will result in bolting, where it produces seeds with no actual flowers. Plant it in late spring for a late summer crop and make sure to soak the seeds in water for a full 24 hours beforehand to help speed germination. The leaves taste faintly of licorice and are commonly used in French cuisine.
Mint encompasses a variety of fleshy perennials that grow a little over 2 feet in height when mature. The leaves are bright green, large, broad at the rear, pointed at the tip and jagged along the edges. All varieties are used in sweets and gums, and in the past have been used to relieve toothache, treat sores and cuts, and whiten the teeth. Plant the seeds an inch down in damp soil during February and keep well-watered until the first shoots come up in a month. Provide with a general N-P-K fertilizer prior to taking cuttings so that it has the nutrients it needs to heal.
Sage is an evergreen with angular, woody leaves and branches. It normally reaches a foot in height. Plant the seeds in late spring in sandy soil where the garden receives plenty of sun. Give it only enough water to keep from being totally dried out, as it is an arid plant. There is no need for further fertilizer. Harvest the youngest leaves in May to September for leaves with the most oil. This oil is both aromatic and vaguely bitter, often used in the preparation of poultry and salmon.
Several species of lavender exist, and all are of Mediterranean origin. It is a shrub-like plant, ranging from 1-3 feet in height, with woody stems that branch many times before extending vertically. The leaves are tubular, pale green, an inch and a half in length, and covered in fine hairs. From the ends of each stem will rise a conical spike, around which sit a series of blue or white tubular open-mouthed flowers with five joined petals. The flowers contain a powerful oil, which is used for perfumes, potpourri, bath oils, and other aromatic concoctions. Sew the seeds in loose, gravelly soil in April, water them every other day, and prune back the first blooms that appear in August to ensure the blooms the plant produces in its second year are larger and well-developed.