After the long hard graft of marking out, digging out the borders and lugging heavy trees around in sub-zero temperatures last winter; it's a welcome change to start adding some of the finer touches to the garden. After 8 long months the fun part begins. It's now time to add the shrubs and garden edging to the exploding atom garden!

It’s easy to become disheartened when you’re halfway through a project. The beginning seems a long time ago and the end seems too far off. You’re right in the thick of it, the messy bit where everything is up in the air. It’s the classic symptom of any project, the middle bit is often where motivation wanes and energy levels decrease. The great thing with garden design is that this middle bit is usually a great point to take stock of the design, the outline and structures. It can be the part in a garden transformation that reinvigorates the gardener to move into the final stages; planting!

The Exploding Atom Garden has been transformed from a blank patch to the outline of a real garden. The borders are in. The trees give definition and height to the once flat area. The next stage is to start to introduce some of the shrubs to the garden and then edge the beautifully symmetrical borders to the turf doesn’t start to cannibalise the precision of the garden.

With any garden design, the planting can make or break a garden. Which is why it is always so important to have a planting plan. That way you can consider what forms, colours and types of plants that may work in your new garden. It goes without saying that soil condition, aspect and exposure are all conditions that must be considered when choosing plants.

Top tips for a garden planting plan

A planting plan is a really useful tool for any garden redesign. Basically, you draw out to scale the garden and then overlay the plants, again to scale. Which allows you to view the borders from a plan (top-down) perspective. A garden planting plan is essential as it aids you in

  • See how plants will fit together, especially colour palettes and spaces
  • Working out the number of plants required (I use the average mature plant size to work out spacing and quantities)
  • Plan the position in relation to each other
  • See the different heights and forms together making sure they blend well (you don’t want massive jumps in height as this distracts the eye eg. Sedum style low ground cover jumping up to Bamboo 12 ft high plants!)
  • Estimate the cost for your planting
Example planting plan

The high level planting plan for the Exploding Atom Garden.

Shrubs for Garden Design

In the Exploding Atom Garden, I’ve chosen a mix of different shrubs to give weight to the garden. The shrubs will provide winter structure and a bridge between the height of the trees and the herbaceous planting. Essential to avoid that neck whip as you go from one to the other! I’ve also chosen a mix of evergreen and deciduous plants to bring winter colour and interest throughout the year. This helps provide birds with something to feed off in the winter and helps prevent the dreaded ‘bare garden’ in midwinter.

  • Corylus avellana (Hazel)
  • Euonymous alatus
  • Viburnum tinus
  • Cotinus coggygria (Smoke bush)
  • Physocarpus red baron
  • Ligustrum ovalifolium (Privet left in bush format)

Can you see the difference between the large Corylus at the back and smaller Viburnum at the front?

What size plant should I choose?

Now if you’ve seen a TV Garden Makeover show you will know just how huge the shrubs and fully formed trees are. Thousands of pounds are spent to get that ‘instant’ look with the plants. The same with show gardens, huge perfect specimens are chosen at great cost for the immediate impact. However, have you ever thought about just how much water and maintenance those sized plants will need not to mention the expense?

My take on choosing the correct plant size is to go for a mix. Buy a few larger specimens to give some instant impact, but only a few. Then choose smaller specimens for the remaining shrubs.

The Benefits of choosing smaller plant sizes

  1. The plants are far cheaper and easier to transport
  2. Smaller plants take less watering
  3. They will establish far quicker as there is less stress on their root system
  4. If they fail to grow its less painful to replace or edit the garden in the first year
  5. If you get them in and they don’t look right you can easily remove them
  6. They are much lighter and easier to move

Where should I put shrubs in my garden?

Now, this may sound like an odd question, but you wouldn’t believe just how many people place shrubs in the wrong location. Usually, due to the flurry of excitement of your lovely neat 5lt pot sized shrubs you’ve just acquired, gardeners then put them pride of place at the front of borders. Which for the first 6 months to a year is fine. Then they grow and grow some more eclipsing the rest of the border.

Can you see how shrubs are layered with the taller ones softening the fence, lower ground cover plants nearer the front?

A better way when placing shrubs it to place them near the back, whereas they grow over time, they provide a support for the rest of the planting scheme. Shrubs can soften fences and provide a great foil for other plantings. If you have borders you can walk around then the middle of the borders are usually best unless you want a front and back at which point the back of the border. There are no hard and fast rules and there’s obviously exceptions to this. However, if you’re new to planting arrangements then the above guidance will set you off on the right path!

Whats next for the Exploding Atom Garden?

So next us will be the planting of herbaceous plants in the Exploding Atom Garden. We have the red hot core of the atom moving into the moody purples border and then the wilderness outer ring. How exciting! These varied borders will provide the colour whilst bridging the gaps between the earth and shrubs. I’ll be further detailing the planting plan of the borders in my next Vlog and Blog.

You can also check out my Youtube channel for more garden design hints tips and hacks. Why not message me on social media for more tips and tricks?

New to the Exploding Atom Garden?

Catch up by going back to the beginning or other design diaries you may have missed!

  1. Exploding Garden Design Diary 1
  2. Marking out the Exploding Atom Garden Design Diary 2
  3. Planting the Trees in the Exploding Atom Garde Design Diary 3
  4. Shrubs and edging in the Exploding Atom Garden Design Diary 4

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