LOBELIA

Annual and perennial; half-hardy



There are several distinct classes of Lobelia, differing materially in

height and habit. For dwarf beds or edgings the compact varieties

should alone be used. These grow from four to six inches high, and form

dense balls of flowers. The spreading or gracilis class, including

L. speciosa and L. Paxtoniana, is in deserved repute for positions

which do not demand an exact limit to the line of colouring. The plants

also show to advantage in suspended baskets, window boxes, rustic work,

vases, and any position where an appearance of graceful negligence is

aimed at. The ramosa section grows from nine to twelve inches high,

and produces much larger flowers than the classes previously named.



All the foregoing can be treated as annuals; and from sowings, made in

February or March plants may be raised in good time for bedding out in

May. Use sandy soil, and place the seed-pans in a temperature of about

60 deg., taking care to keep them moist. By the end of March or beginning of

April the seedlings will be ready for transferring to pots, pans, or

boxes. The last named are very serviceable for this flower, for they

afford opportunity of giving the seedlings sufficient space to produce a

tufty habit of growth. A gentle heat will start them, and they will give

no trouble afterwards, except on one point, which happens to be of

considerable importance. It is that the plants should never be allowed

to produce a flower while in pots or boxes. Pick off every bud until

they are in final positions, and then, having taken hold of the soil,

they will bloom profusely until the end of the season.



Lobelias make elegant pot plants, yet, with the exception of the

ramosa varieties which are excellent for the purpose, they cannot be

grown satisfactorily in pots. The difficulty is easily surmounted by

putting them out a foot apart in a good open position, and if possible

in a rather stiff soil. When they have developed into fine clumps lift

them with care and place them in pots, avoiding injury to the roots.

This method will produce a display of colour which cannot be attained by

exclusive pot culture.



From the best strains of seed it is possible that a few plants may

revert to long-lost characters. Florists are striving to obviate this,

but it will require time. Meanwhile there are two ways of dealing with

the difficulty. Some growers prefer to raise plants from seed, and take

cuttings from approved specimens for the next season. This plan insures

exactitude in height and colour, with almost the robust growth and

free-flowering qualities of seedlings. But it necessitates holding a

stock through the winter, and this may be a serious matter to many. The

simpler proceeding, and one which answers well in practice, is to raise

seedlings annually and to remove from the pans or boxes any plants which

show the least deviation from the true type. A few kept as a reserve

will replace faulty specimens which may be detected after planting out.



The handsome perennial section of Lobelias obtains less attention than

it deserves, especially as the most ordinary routine culture will

suffice for these plants. They are partial to moisture, and also to a

deep rich loam. A sowing on moderate heat in February or March will

secure plants fit for bedding out in May. They may also be grown

entirely without the aid of artificial heat from sowings in June or

July. Employ pots or seed-pans, and pot off singly immediately the

plants are large enough to handle. The protection of a cold frame or

hand-light is all that is necessary during winter, and the planting out

may be done in May. These Lobelias reach two feet in height, and make

excellent companions to such flowers as Anemone japonica alba and

Hyacinthus candicans. The dark metallic foliage and dazzling scarlet

flowers also have an imposing effect as the back row of a ribbon border.