The whole secret of the growth of these products before the regular season is in the cropping and the soil. Every inch of soil bears at least three crops a year, each of them anticipating the season and therefore producing fancy prices. The soil is regarded by the gardeners as of so much value that, as explained, there is a special clause in the lease that they are at liberty to cart it away to a depth of eighteen inches if they give up the farm at the termination of the agreement. The ground is so precious that no space is allowed for a wheelbarrow path. The loads are all carried in baskets and not a square inch is allowed to go to waste in this rich garden.
A good deal of the success with hotbeds is due to the careful selection of the manure. Cold manure, like that of cows and pigs, should never be used because it will not heat. Horse manure is best, but in this case at least one-third of the bulk should be straw. If pure manure is used, it will pack too tightly when firmed, so that it will not heat. If possible, the manure from grain-fed, straw-bedded horses should be used.
It is always advisable to place coldframes and hotbeds in a protected place, and particularly to protect them from cold north winds. Buildings afford excellent protection, but the sun is sometimes too hot on the south side of large and light-colored buildings. One of the best means of protection is to plant a hedge of evergreens. It is always desirable, also, to place all the coldframes and hotbeds close together, for the purpose of economizing time and labor.