The octal numeral system, or oct for short, is the base-8 number system, and uses the digits 0 to 7. Octal numerals can be made from binary numerals by grouping consecutive binary digits into groups of three. For example, the binary representation for decimal 74 is 1001010. Two zeroes can be added at the left: 1 001 010, corresponding the octal digits 1 1 2, yielding the octal representation 112. In the decimal system each decimal place is a power of ten. For example: 74 10 = 7 Ã 10 1 + 4 ...
How lifting and dividing works. Irises spread by underground rhizomes, a storage organ similar to a bulb. Plants can be split apart and replanted in the autumn or spring. It should be done every three to five years, depending on how many flowers the plants produce. How to do it.
Conflicting info on many sites. I think Schreiner says to cut the fans back. Others say not to. I definitely will cut off the brown or spotted foliage but I wait until after the first hard frost. I suppose it depends on where you live (zone) and how badly things like too much rain or snow you get affect your irises.