Submarine defense: Russian subs posing Pacific threat to US Navy. Military & Defense. March 18, 2016, 13:28 UTC+3. Ahead of Submariner Day marked on March 19 in Russia, TASS reviews Russian submarines that cause the US Navyâs greatest concern in the Pacific region.
What iceberg lettuce lacks in flavor it makes up for in crispness, versatility and storage length -- washed and stored correctly, a head of iceberg lettuce can last up to seven days in the refrigerator.
3. Plant the lettuce seeds. Place one or two seeds in the center of each section of the seed tray, and gently cover them with a thin layer of the seed starting mix. 1  Iceberg lettuce seeds should be sown approximately four to six weeks before the last day of frost in your area.