50 The Principles of Vegetable -Gardening 



200 to 250 plants being grown under each sash, or 1,000 plants 

 from each frame. 



These frames may be used again for tomato plants for the 

 same area, using about 450 plants. This will allow a sash for 

 every fifty-five plants. Plants for this area may be grown in 

 one frame, but would be crowded and not as stocky as if given 

 more room. 



One frame should be in use at the same time for eggplants 

 and peppers, two sash of each, growing fifty transplanted plants 

 under each sash. 



Two frames will be required for cucumbers, melons and 

 early squashes. 



If one wishes to grow extra-early lettuce, an estimate of 

 sixty to seventy heads should be made to a sash. 



It is assumed that celery and late cabbages are to be started 

 in seed-beds in the open. 



If spinach is grown in frames, the sash used for one of the 

 late crops above may be used through the following winter. 



This makes a total of five frames, the cost, depending on 

 make and material, from $1 to $5 ; twenty sash and covers, at 

 $2.75, $55 ; manure at market price, calculating at least three or 

 four loads per frame. This is a liberal estimate of space, and 

 should allow for all ordinary loss of plants, and for discarding 

 the weak and inferior ones. It supposes that most or all of the 

 plants are to be transplanted once or more in the frames. Many 

 gardeners have less equipment of glass. 



2. THE MAKING OF FRAMES 



In the planning of a coldframe or hotbed, the 

 builder must have in mind the following objects to be 

 attained : (1) a sufficient and uniform supply of heat ; 

 (2) ample protection from cold ; (3) facility for venti- 

 lation ; (4) facilities for obtaining water ; (5) plants to 

 be near the glass, and yet to have head -room for growth 



