Posted: 11/04/2014 at 00:07
Hmmm! Planting in 3, 5 or 7? I do plant often in 3's but usually I plant singly. Reason is ......if grown on before planting out .....they make a good impact anyway as sIngle specimens and, secondly, I want to grow lots and lots of different varieties. Grow in a group of 7.....I do for heathers......and you have nothing when flowering is over over a large area. In 2 years or 3 I will have large individual specimens that have easily caught up with the 7 planted by others.
I see our Monty planting in his groups but he has a huge garden but I often think he overplants, ESP in his containers. I often think by mid summer his plants will be choked by his overplanting...!
Plant combinations work better without the large groupings, in my opinion. My single "specimen" plants provide many more interesting and varied plants to look at. E.g. Heleniums will make large plants very quickly as do salvias, cannas, asters ( although I do like a group of frik monch)and the like. Grasses too grow large and do not need to be planted in groups except for the little 'uns like Tennuissima, hordeum jubatam, fescues efc.