Waitzia.—­Very beautiful half-hardy annuals, but more suitable for the greenhouse than the open flower-bed.  They require a sandy peat and leaf-mould, and the pots to be well drained, as too much water is as destructive to them as too little.  They may be had in flower from May to August by making two sowings, one in September and the other in February, and keeping them in the greenhouse.  When large enough to handle, pot off into 3-in. pots, putting two plants in each pot close to the sides, and shift them into larger ones when they have made sufficient growth.  Place them in a dry and airy situation and near the glass.  They are unable to stand the least frost, therefore, if they are planted out, it should not be done before the beginning of June.  Height, 11/2 ft.

Waldsteina Fragarioides.—­A hardy and pretty trailing rock plant, with deep green foliage.  From March to May it bears yellow Strawberry-like flowers.  Any soil suits it, and it may be increased by seed or division.  Height, 6 in.

Wall-flower (Cheiranthus).—­These favourite hardy perennials prefer a rich, light, sandy soil, and a dry situation.  The seed may be sown where it is intended for them to bloom either in autumn or spring.  Thin out to 2 ft. apart.  They may also be increased by shoots torn from the stems of old plants.  As well as flowering early in spring, they often bloom in the autumn.  Height, 1-1/2 ft.

Walnuts.—­The Nuts for raising young trees may be planted at any time between October and the end of February, 3 in. deep and 1-1/2 ft. apart.  Train to a single stem 8 to 10 ft. high, removing all the side branches as soon as they make an appearance.  The following year they may be planted in their permanent position, which should be high, yet sheltered from frost.  Two of the best tall-growing varieties are Thin-shelled and Noyer a Bijou.  The Dwarf Prolific makes a good bush tree.

Wand Plant.—­See “Galax.”

Wasps.—­To destroy Wasps rinse a large bottle with spirits of turpentine, and thrust the neck into the principal entrance to their nest, stopping up all the other holes to prevent their escape.  In a few days the nest may be dug up.  The fumes of the spirit first stupefies and eventually destroys the insects.

Water-cress.—­Sow in prepared places, during spring, in sluggish brooks and moist situations; or it may be grown on a shady border if kept moist by frequent waterings.  It may also be grown in a frame in September from cuttings placed 6 in. apart, sprinkling them daily, but keeping the frame closed for two or three weeks, then watering once a week.  Give all the air possible in fine weather, but cover the frame with mats during frosts.  It is best when grown quickly.

Watsonia.—­Plant the bulbs during January in sandy loam with a little peat.  They flower in April.  Height, 1-1/2 ft.

Weeds in Paths.—­These may be destroyed by strong brine, applied when hot.  Or mix 1/2 lb. of oil of vitriol with 6 gallons of water, and apply, taking care not to get the vitriol on the hands or clothes.