7 or more becomes a mass

With seven plants, you achieve enough mass to start making a strong visual statement. Once you get as high as seven, you have some leeway either to plant in masses or to plant the same plant in groups of 3+3+1.Avoid 3 +4 because it feel number higher than seven can be separated into two sets of odd numbers - for example, 12 divided into sets of 5 and 7. Odd numbers higher than seven can be separated into groups of add numbers. For example, 3+3+3=9 works, but avoid breaking up an odd number of plants into an odd-numbered group and an even-numbered group, such as 5+ 4. At a certain threshold -roughly around a dozen, depending on the typw of plant-the eye can't tell whether you have a mass of 12 or 13 plants. At that point, you don't need to worry anymore about counting.