You should plant three (3) Impatiens Plants per 8" container.
One example is Himalayan balsam (Impatiens glandulifera). Now a common weed growing head height in damp areas (river banks and ditches) the ripe seeds explode and disperse when brushed against by a walker or animal.
How big the squares should be on a 15x20 inch checkerboard will depend upon how many squares a person will put on the board. For most checkerboards, the squares will be approximately one-inch in diameter.
Iris do not have bulbs- they have a rhizome, a specialized root, and do not grow in small pots. Even one root in a 6 inch pot would not work.
about an inch
12 inches!
30
That depends on the scale factor which should be shown on the map
I number should be 1 inch wide and tall.
150-165lbs
Approximately 1.4 square feet.
how many inch in 1cft
1600 tiles, however, if you are installing tile you should allow an extra 10% for waste and cuts.