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There has been a large measure of success attained in the culture of these Andean plants in several instances and near the seashore, or during a cool summer season. The plants do well under special conditions, such as a structure facing north, with ample shade by using roller-blinds a foot or more above the glass roof, and by using a spray of water on very hot days either under the benches or in the path, ejected with force to create a spray and cause rapid evaporation. Perforated pipes have been used, but these soon clog up and are ineffectual. It is best to turn off the spray at night as the outside air will be cooler. It is best in winter to bring the plants to a lighter house where they can get all the sun in the dull months, as most of the growth is made during the winter and needs to be well matured and strong to carry the plants through the flowering period of early summer months. In March, there are very bright days when a little shade is necessary, and early in April removal should be made to summer quarters in the coolhouse proper. One very hot summer has been known to undo the upbuilding of several preceding cool ones. Odontoglossums are freely raised from seeds by the hybridist in Europe, but have never been raised in the American collections. Their seeds germinate the readiest of any orchids, coming up like grass in a few weeks after sowing, but invariably go down again during the heat of "dog days" hi summer. The hybrids imported seem to have more vigor, especially those that have O. nobile as a parent. One of the most wonderful phases of the hybridists' work is seen in the great variety produced,  the proving up of the origin of many supposed species of Reichenbach  and others, the reproduction of fine types from seeds true to themselves in a measure, but usually  with an admixture of the poorest present, showing the very complex origin of our most beautiful garden orchids as they were found first. The partial extinction of these odontoglossums by the march of cultivation of coffee and other valuable crops in the Andes has no longer any terror to the cultivator, equally good forms now being raised in gardens, and sometimes flowered in months rather than years. There is still the element of uncertainty as to what will appear, as with the native imported pieces. Even the once rare native natural hybrids are now produced, but from the finest types as parents, and sold now at modest prices. It is too much to expect that the cultivation of O. crispum and other coolhouse species will become general until there is certainty of control of temperatures in summer as in winter.  

There has been a large measure of success attained in the culture of these Andean plants in several instances and near the seashore, or during a cool summer season. The plants do well under special conditions, such as a structure facing north, with ample shade by using roller-blinds a foot or more above the glass roof, and by using a spray of water on very hot days either under the benches or in the path, ejected with force to create a spray and cause rapid evaporation. Perforated pipes have been used, but these soon clog up and are ineffectual. It is best to turn off the spray at night as the outside air will be cooler. It is best in winter to bring the plants to a lighter house where they can get all the sun in the dull months, as most of the growth is made during the winter and needs to be well matured and strong to carry the plants through the flowering period of early summer months. In March, there are very bright days when a little shade is necessary, and early in April removal should be made to summer quarters in the coolhouse proper. One very hot summer has been known to undo the upbuilding of several preceding cool ones. Odontoglossums are freely raised from seeds by the hybridist in Europe, but have never been raised in the American collections. Their seeds germinate the readiest of any orchids, coming up like grass in a few weeks after sowing, but invariably go down again during the heat of "dog days" hi summer. The hybrids imported seem to have more vigor, especially those that have O. nobile as a parent. One of the most wonderful phases of the hybridists' work is seen in the great variety produced,  the proving up of the origin of many supposed species of Reichenbach  and others, the reproduction of fine types from seeds true to themselves in a measure, but usually  with an admixture of the poorest present, showing the very complex origin of our most beautiful garden orchids as they were found first. The partial extinction of these odontoglossums by the march of cultivation of coffee and other valuable crops in the Andes has no longer any terror to the cultivator, equally good forms now being raised in gardens, and sometimes flowered in months rather than years. There is still the element of uncertainty as to what will appear, as with the native imported pieces. Even the once rare native natural hybrids are now produced, but from the finest types as parents, and sold now at modest prices. It is too much to expect that the cultivation of O. crispum and other coolhouse species will become general until there is certainty of control of temperatures in summer as in winter.  

Good results have been gained by giving a weak solution of ammonium phosphate, two ounces potassium nitrate, three ounces to three gallons of water, using one ounce of this stock solution to each gallon used for the plants. This is known as the "Cookson formula," advocated by a cultivator who noticed that odontoglossums flourished in the vicinity of smoky cities, and it was traced to the deposit of soot on the glass roofs carried by rain-water into the cisterns to be used for the plants. Rain-water is seldom conserved here for watering orchids, but the addition of this slight quantity of fertilizer seems to be beneficial and to take the place of the rain-water.

Good results have been gained by giving a weak solution of ammonium phosphate, two ounces potassium nitrate, three ounces to three gallons of water, using one ounce of this stock solution to each gallon used for the plants. This is known as the "Cookson formula," advocated by a cultivator who noticed that odontoglossums flourished in the vicinity of smoky cities, and it was traced to the deposit of soot on the glass roofs carried by rain-water into the cisterns to be used for the plants. Rain-water is seldom conserved here for watering orchids, but the addition of this slight quantity of fertilizer seems to be beneficial and to take the place of the rain-water.

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