Function. Plants also have a pH rating. Plants whose pH matches the soil's pH can take up nutrients more efficiently than plants with a pH rating different than the soil. Pine trees and the needles that they produce prefer acidic soil.
Price of a Stamp. The current price of a first class stamp is 49 cents. A domestic first class letter (1 oz.) is 49 cents. The price of each additional ounce is 21 cents. It will cost you 34 cents to send a domestic postcard.
Stamp prices going up Sunday. These forever stamps honoring President John F. Kennedy will be dedicated on Presidents Day. The price of a forever stamp will rise Jan. 22, 2017. SPRINGFIELD -- The Postal Service will raise the price of its first-class forever postage stamps by 2 cents on Sunday, Jan. 22. The price of a stamp will go from 47 cents to 49 cents. The hike was approved by the Postal Regulatory Commission last year.