Pick the Right Pot
Make sure that the plant fits the pot. Your design will look best if small plants are used for small pots in small spaces, and larger plants are reserved for tubs, barrels, or big pots. Keeping things in scale is an important aspect of container gardening. A huge barrel on a tiny patio will look out of place, and a tiny dish garden will be lost on an expansive deck.
Mix and Match
Ornamental grasses, such as Pennisetum Rubrum, can make an exciting display. The grasses provide height and movement as they sway in the breeze, replicating the feel of a larger garden.
Create Focal Points
Containers can direct your eye from one point in the garden to the next. By placing a planter near the street curb and one near the front door, your guests are clearly directed to your entryway.
Extend the Life of Wooden Planters
To prevent or at least reduce the chance of rot in wooden containers, raise them off the ground with bricks, pavers, or even wooden blocks. Raising the container allows the wood to dry between waterings. Be sure to use enough supports to keep the container level and stable.
Enhance a Garden Theme
By using waterproof containers, a submersible pump, and a fountainhead, any garden can be enhanced by the sight and sound of moving water. I once used an antique hand pump and a half whiskey barrel as a focal point in a small cottage garden. The water dribbled from the spout into the barrel and recirculated back through the hand pump.