Meconopsis Cambrica(_Welsh Poppy_).--An ornamental hardy perennial, often found on English rocks. It may be grown in any light, rich soil, is easily raised from seed, and blooms in June. Height, 1-1/2 ft. Medlars.--These trees will grow on any well-drained soil. The Dutch Medlar is most prized, as it bears the largest fruit. It is raised from seed, and usually trained to a standard form. The Nottingham and Royal are also excellent varieties. Any special variety may be grafted on to the seedlings. On deep soils it is best grafted on the Pear stock; on light, sandy soil it may be grafted on the White Thorn. No pruning is required, beyond cutting away cross-growing branches. Megasea.--This hardy herbaceous plant flowers from April to June. A light, sandy soil suits it best. It may be grown from seed or multiplied by division. Height, 1 ft. Melissa Officinalis.--A hardy perennial, flowering in July. Any soil suits it. It is increased by division of the root. Height, 1 ft. Melittis Melissophyllum (_Large-flowered Bastard Balm_).--This handsome perennial is not often seen, but it deserves to be more generally grown, especially as it will thrive in almost any soil; but to grow it to perfection, it should be planted in rich loam. It flowers from June to August, and may be increased by division of the roots any time after the latter month. Height, 11/2 ft. Melon.--Sow from January to June in pots plunged in a hotbed, the temperature of which should not be under 80 degrees. When the plants have made four or five leaves, set them out in a house or hotbed having a temperature ranging from 75 to 85 degrees. Keep the plants well thinned and water carefully, as they are liable to damp off at the collar if they have too much wet. Do not allow them to ramble after the fruit has begun to swell, nor allow the plants to bear more than two, or at most three, melons each. They require a strong, fibry, loamy soil, with a little rotten manure worked in. The Hero of Lockinge is a grand white-fleshed variety, and Blenheim Orange is a handsome scarlet-fleshed sort. Menispermum Canadense (_Moon seed_).--A pretty slender-branched, hardy, climbing, deciduous shrub, with yellow flowers in June, followed with black berries. It grows in any soil, and can be propagated by seed, by division of roots, or by planting cuttings in spring in a sheltered spot. Height, 10 ft. Mentha Rotundifloria Variegata (_Variegated Mint_).--A hardy perennial, which may be grown in any soil, and is easily increased by dividing the roots. It flowers in July. Height, 2 ft. Menyanthes.--Treat as other hardy aquatics. Menziesia (_Irish Heath_).--This evergreen thrives best in fibrous peat to which a fair quantity of silver sand has been added. While excessive moisture is injurious, the plant must not be kept too dry; the best condition for it is to be constantly damp. Slips torn off close to the stem will root in sand under glass, placed in gentle heat. Height, 2 ft.