1778
Description.--The roots are small and fibrous; the stems, about 18
inches tall, very numerous, erect or spreading, square; the leaves,
green (except as mentioned), broadly ovate with toothed margins,
opposite, rather succulent, highly scented; the flowers, few, whitish,
or purplish, in small, loose, axillary, one-sided clusters borne from
midsummer until late autumn; the seeds very small--more than 50,000 to
the ounce.
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Cultivation.--Balm is readily propagated by means of divisions,
layers, cuttings, and by its seeds, which germinate fairly well even
when four years old. Owing to its small size, the seed should be planted
in a seedpan or flat in a greenhouse or hotbed, where all conditions can
be controlled. The soil should be made very fine and friable, the thinly
scattered seeds merely pressed upon the surface with a block or a brick,
and water applied preferably through the bottom of the seedpan, which
may be set in a shallow dish of water until the surface of the soil