Answer: When planting, add a generous amount of peat moss to reduce alkalinity. You may want to get your soil tested, and, if necessary add sulfur to further lower pH. Contact your Cooperative Extension office for soil testing information: 319/377-9839 Theylike rich, moist soils containing an abundance of organic matter. They do equally well in full sun and partial shade, but cannot withstand harsh, drying winds. You would be wise to knock heavy snow off the branches to prevent their breaking. There are many different types of hemlock (Tsuga canadensis) which will grow to different heights. Types sold as hedge plants will mature at 4 or 5 feet tall, while tree varieties will be much larger. You can, of course, prune to keep to the size you want.
Q&A Library Searching Tips