{"product_id":"noc12827","title":"1959 Press Photo Greenhouse Plants in Perlite, New Orleans - noc12827","description":"Greenhouse Plants in Perlite, New Orleans. City Park gardeners find many new uses for perlite, a light volcanic mineral. These greenhouse plants are set into material. Horticultural uses are being found for perlite, a form of volcanic mineral commonly used in plastering or production of lightweight concrete. A sterile, granular material, horticultural perlite is feather-light, weighing only six to nine pounds per cubic foot. The lightness is achieved through expansion; the perlite has been blown up to 13 times its original volume by exposure to 1800-degree heat. Mined in the mountains of the Colorado-Arizona region it is crushed into different grades, then shipped to New Orleans where it is \"popped\" or exploded. Flowers.\u003cbr\u003e\u003cbr\u003ePhoto is dated 1959.\u003cbr\u003e\u003cbr\u003ePhoto measures 10 x 8.25 inches.","brand":"noc","offers":[{"title":"Default Title","offer_id":43799161765935,"sku":"noc12827","price":19.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0257\/3165\/files\/noc12827.jpg?v=1746124773","url":"https:\/\/historicimages.com\/products\/noc12827","provider":"Historic Images","version":"1.0","type":"link"}