U-boats. U-boats were German submarines that caused havoc in World War Two during the Battle of the Atlantic. U-boats were so damaging that Winston Churchill commented that it was the only time in World War Two that he thought Britain would have to contemplate surrendering.rom 1918 on, Germany was technically not allowed to have submarines or submarine crews. However, no mechanisms were in place to stop research into submarines in Germany and it became clear that during the 1930âs, Germany had been investing time and men into submarines.
Mountain laurel thrives in well-draining, acidic soil with a pH ranging from 5.0 to 5.5. Use a soil pH testing kit -- available at garden centers or home improvement stores -- to test your soil. If the soil in the planting area is higher than 5.5, mix 1 to 2 inches of sphagnum peat moss into the soil's top 6 inches.
Leylandii will often grow less in the first year as they establish their root systems but growth in their first year can be achieved by watering them regularly over the summer-this means giving the soil around their roots a good soak once or twice a week. Laurel grows up to 60cm (2ft) a year under ideal conditions.t depends on the growing conditions and how far apart you plant them. Under ideal conditions, leylandii should create a good screen after two years growth when planting 120cm+ plants at 60cm apart and it will take about three years at 100cm apart.