We all know three’s a crowd right? Right, but in design-speak that’s not a bad thing – in fact it’s a very good thing. Massing or grouping plants in threes or other odd numbers is good design – there’s something very pleasing about this configuration because it creates unity.
How so you ask?
Well first let’s look at what happens when we use even numbers – the eye wants to divide these in half…because it can. This visual division disrupts unity. If, on the other hand, we group elements in odd numbers the eye can’t divide this group and unity is therefore maintained.
Generally speaking odd numbers are preferable, but with larger groups (8 or more) this ceases to be important – the eye will automatically view these as a unified mass. So if you live on an acreage and have a shelterbelt consisting of 100 spruces, I’m not going to insist that you should have 99.
Don’t get carried away with threesomes though – if all your plant groups are trios, the composition will lack visual credibility and look somewhat contrived. Instead, use some groups of three, some fives or sevens and some singles.
So is there ever an occasion when even numbers are appropriate? Yes – as with all the design principles, it’s acceptable to periodically ignore a particular guideline, providing you know why. In other words it must be done with purpose. For example, if you want to ‘stage’ a feature tree, it could be flanked on either side by two smaller shrubs to create a moment of symmetry – this will draw attention to the more dominant feature.
Another example would be when plantings are used to reinforce a design line – in this case it doesn’t matter if even or odd numbers are used since the resulting visual movement trumps any tendency of the eye to break groups in two.
Sometimes a group of three consists of three similar but not identical features, for example a grouping of boulders or containers.
Yes indeed three’s a crowd – ‘oddly’ satisfying isn’t it?Yours, Sue © Sue Gaviller and Not Another Gardening Blog 2012. Unauthorized use and/or duplication of this material without express and written permission from this blog’s author and/or owner is strictly prohibited. Excerpts and links may be used, provided that full and clear credit is given to Sue Gaviller and Not Another Gardening Blog with appropriate and specific direction to the original content.
- The Principled Gardener (notanothergardeningblog.com)
- The Principled Gardener Part 2 – Unity by Dominance (notanothergardeningblog.com)
Sue, If there’s ONE thing I’ve learned from you and live by, it’s the rule of thirds in most all of my design ideas! P.S if you find a “down time” day, your always welcome to visit out at Brouwers Acres!
Nice to hear from you – happy to hear you learned one thing, though I’m sure you learned plenty more. And I promise to join you for a glass of wine at Brouwers’ Acres real soon!
Beautiful photos as always – it is amazing just how much you have going on in your garden – enjoy your break away from blogging. I agree that it is a great summer perennial. I have it both in my front garden at home and in my garden at the cottage. Both areas face south and tend to get very dry. The cone flower is ideal.
Thank-you for the compliment and your comment.
It’s always a challenge for me to actually spend time in my own garden as so much of my time is spent designing for others. Add blogging to the mix and it’s a wonder I get to enjoy my garden at all! Low maintenance plant material is the key.
Thanks again for reading,