_Distances for planting annuals_ (or plants treated as annuals).

Only an approximate idea can be given of the distances apart at which annuals should be planted, for not only does the distance depend on the fertility of the land (the stronger the soil the greater the distance), but also on the object the person has in growing the plants, whether to produce a solid mass effect or to secure strong specimen plants with large individual bloom. If specimen plants are to be raised, the distances should be liberal.

The distances here given for some of the commoner annuals may be considered to represent average or usual spaces that single plants may occupy under ordinary conditions in flowerbeds, although it would probably be impossible to find any two gardeners or seedsmen who would agree on the details. These are suggestions rather than recommendations. It is always well to set or sow more plants than are wanted, for there is danger of loss from cut-worms and other causes. The general tendency is to let the plants stand too close together at maturity. In case of doubt, place plants described in books and catalogues as very dwarf at six inches, those as medium-sized at twelve inches, very large growers at two feet, and thin them out if they seem to demand it as they grow.

The plants in these lists are thrown into four groups (rather than all placed together with the numbers after them) in order to classify the subject in the beginner's mind.

[Illustration: Fig. 246. Wild phlox (_P. maculata_), one of the parents of the perennial garden phloxes.]

6 to 9 inches apart

Ageratum, very dwarf kinds. Alyssum. Asperula setosa. Cacalia. Candytuft. Clarkia, dwarf. Collinsia. Gysophila muralis. Kaulfussia. Larkspur, dwarf kinds. Linaria. Linum grandiflorum Lobelia Erinus. Mignonette, dwarf kinds. Pansy. Phlox, very dwarf kinds. Pinks, very dwarf kinds. Rhodanthe. Schizopetalon. Silene Armeria. Snapdragon, dwarf. Sweet pea. Torenia.

10 to 15 inches apart

Those marked (ft.) are examples of plants that may usually stand at twelve inches.

Abronia (ft.). Acroclinium. Adlumia. Adonis autumnalis. Ageratum, tall kinds. Alonsoa. Aster, China, smaller kinds (ft.). Balsam. Bartonia. Browallia. Calendula. California poppy (Eschscholtzia). Calliopsis. Cardiospermum. Carnation, flower-garden kinds (ft.). Celosia, small kinds. Centaurea Cyanus. Centauridium (ft.). Centranthus (ft.). Clarkia, tall (ft.). Convolvulus tricolor (ft.). Gaillardia, except on strong land. Gilias. Glaucium. Godetia (ft.). Gomphrena. Gypsophila elegans. Helichrysum (ft.). Hunnemannia. Jacobaea. {kinds. Larkspur, tall annual Malope. {varieties. Marigold, intermediate Mignonette, tall kinds. Mesembryanthemum (ice-plant) (ft.). Morning-glory. Nasturtium, dwarf. Nemophila. Nigella. Petunia. Phlox Drummondii. Pinks. Poppies (6 to 18 in., according to variety). Portulaca (ft.). Salpiglossis (ft.). Scabiosa (ft.). Schizanthus. Snapdragon, tall kinds. Statice (ft.). Stock (ft.). Tagetes, dwarf French. Thunbergia (ft.). Verbena. Whitlavia (ft.), {(ft.). Zinnia, very dwarf kinds

[Illustration: Fig 249. Eschscholtzia, or California poppy. One-half size.]

18 to 24 inches

Amarantus. Ammobium. Argemone. Aster, China, the big kinds (or rows 2 ft. apart and plants 1 ft. in row). Callirrho. Canterbury bell (up to 3 ft.). Celosia, large kinds (up to 30 in.). Chrysanthemum, annual. Cosmos, smaller kinds. Euphorbia marginata. Four o'clock (up to 30 in.) Hop, Japanese. (to 30 in.) Kochia, or summer cypress Marigold, tall kinds. Nasturtium, tall, if allowed to spread on the ground. Nicotiana (up to 30 in.). oenothera, tall kinds. Salvia coccinea (_splendens grandiflora_), about 2 ft. Zinnia, tall kinds (up to 3 ft).

About 3 feet or more

Caladium. Cosmos, tall kinds (2 to 3 ft.). Dahlia. Datura. Martynia. Ricinus or castor bean. Solanums. Sunflower, tall kinds. Wigandia.