Posted: 28/07/2016 at 16:51
3 lavendars in a group? plant about 20 cm apart in a triangle. Always plant in odd numbers....evenslook odd.
Some plants are best in groups but I think "advisors" are sometimes a bit naughty. Many perennials....most perennials...grow large and do so quickly. In 3 years heleniums for example need dividing as they usually are big.
pokhim, read up on your plants, your soil and your conditions. You will learn how they grow and how big and how fast. I grow some plants in groups but mostly they are single large specimens. Don't be tempted into buying everything in 3's.....in 2 years those plants can be divided and planted out again as a group if you want