About Orchids | Page 5

my big tanks sprung a leak. Having learned by that time the ABC, at least, of _terra-firma_ gardening, I did not trouble to have them mended. On the contrary, making more holes, I filled the centre with Pampas grass and variegated Eulalias, set lady-grass and others round, and bordered the whole with lobelia--renewing, in fact, somewhat of the spring effect. Next year, however, I shall plant them with _Anomatheca cruenta_--quaintest of flowering grasses, if a grass it must be called. This charming species from South Africa is very little known; readers who take the hint will be grateful to me. They will find it decidedly expensive bought by the plant, as growers prefer to sell. But, with a little pressing seed may be obtained, and it multiplies fast. I find Anomatheca cruenta hardy in my sheltered garden.
The small tank on legs still remains, and I cut a few _Nymph?a odorata_ every year. But it is mostly given up to _Aponogeton distachyon_--the "Cape lily." They seed very freely in the open; and if this tank lay in the ground, long since their exquisite white flowers, so strange in shape and so powerful of scent, would have stood as thick as blades of grass upon it--such a lovely sight as was beheld in the garden of the late Mr. Harrison, at Shortlands. But being raised two feet or so, with a current of air beneath, its contents are frozen to a solid block, soil and all, again and again, each winter. That a Cape plant should survive such treatment seems incredible--contrary to all the books. But my established Aponogeton do somehow; only the seedlings perish. Here again is a useful hint, I trust. But evidently it would be better, if convenient, to take the bulbs indoors before frost sets in.
Having water thus at hand, it very soon occurred to me to make war upon the slugs by propagating their natural enemies. Those banks and borders of Saxifraga hypnoides, to which I referred formerly, exact some precaution of the kind. Much as every one who sees admires them, the slugs, no doubt, are more enthusiastic still. Therefore I do not recommend that idea, unless it be supplemented by some effective method of combating a grave disadvantage. My own may not commend itself to every one. Each spring I entrust some casual little boy with a pail; he brings it back full of frog-spawn and receives sixpence. I speculate sometimes with complacency how many thousand of healthy and industrious batrachians I have reared and turned out for the benefit of my neighbours. Enough perhaps, but certainly no more, remain to serve me--that I know because the slugs give very little trouble in spite of the most favourable circumstances. You can always find frogs in my garden by looking for them, but of the thousands hatched every year, ninety-nine per cent. must vanish. Do blackbirds and thrushes eat young frogs? They are strangely abundant with me. But those who cultivate tadpoles must look over the breeding-pond from time to time. My whole batch was devoured one year by "devils"--the larv? of Dytiscus marginalis, the Plunger beetle. I have benefited, or at least have puzzled my neighbours also by introducing to them another sort of frog. Three years ago I bought twenty-five Hyloe, the pretty green tree species, to dwell in my Odontoglossum house and exterminate the insects. Every ventilator there is covered with perforated zinc--to prevent insects getting in; but, by some means approaching the miraculous, all my Hyloe contrived to escape. Several were caught in the garden and put back, but again they found their way to the open-air; and presently my fruit-trees became vocal. So far, this is the experience of every one, probably, who has tried to keep green frogs. But in my case they survived two winters--one which everybody recollects, the most severe of this generation. My frogs sang merrily through the summer; but all in a neighbour's garden. I am not acquainted with that family; but it is cheering to think how much innocent diversion I have provided for its members.
Pleasant also it is, by the way, to vindicate the character of green frogs. I never heard them spoken of by gardeners but with contempt. Not only do they persist in escaping; more than that, they decline to catch insects, sitting motionless all day long--pretty, if you like, but useless. The fact is, that all these creatures are nocturnal of habit. Very few men visit their orchid-houses at night, as I do constantly. They would see the frogs active enough then, creeping with wondrous dexterity among the leaves, and springing like a green flash upon their prey. Naturally, therefore, they do not catch thrips or mealy-bug or aphis; these are too small game for the midnight sports-man. Wood-lice, centipedes, above