Container gardening is exactly as the name implies: planting in pots and containers. Suitable for all garden designs and shapes (whether a small garden, balcony or patio) and most garden plants, it's a great way to create beautiful outdoor displays for seasonal interest, whether you want to brighten up a corner of the garden or make the entrance of your home look welcoming.
Containers can restrict root growth so plants can't tap into moisture as easily as those in the ground, so choosing the right compost, maintaining an even water supply and ensuring good drainage to prevent waterlogging is essential for plants thrive.
It's also important to choose the right type of container. For example, for containers that need to be outside all year, you should choose frost-proof terracotta rather than those labelled frost-resistant, as these can still crack when temperatures fall for long periods, advises the RHS.
• Check that your container has drainage holes and, if not, add some. Next, put a good layer of drainage material, such as bits of broken pots, gravel, or pieces of polystyrene packaging, in the bottom before adding the soil.
• Container planting enables you to grow plants that prefer ericaceous compost, such as pieris and azaleas, but multi-purpose compost will work for most plants. If you’re aiming to create more 'permanent' displays, such as shrubs or trees, it’s a good idea to use actual soil or a soil-based compost to give them a secure hold and the right nutrients.
• Leave a gap of at least 5cm at the top of the container, so the compost doesn’t overflow when you water the plant.
• Use the correct feed for the type of plant you’ve chosen and ensure you apply it at least once a month during the growing season in spring and summer.
• Never let your pots dry out or become waterlogged, which is why drainage is key. You’ll need to water them every day during the summer. Aim for the base of the plant rather than over flowers and foliage. Saucers under pots are useful for conserving water in summer, but should be removed come winter. To be extra safe, invest in some pot feet to lift planters off the ground, allowing for better drainage during the wetter months.
• Add a layer of mulch on top of the soil. Use either organic matter, such as bark or compost, or hard materials such as slate chips or gravel. Mulching a container will help retain moisture, as well as keep weeds at bay.
The RHS advises the following:
CLAY OR TERRACOTTA
Looks attractive but tends to dry out more quickly than plastic, plus are prone to cracking caused by frost. Opt for frost-proof pots or stand pots on 'feet'.
PLASTIC
Plastic pots are lighter than clay and don't dry out as much as clay or terracotta.
METAL
Frost-proof and won't dry out like clay, however, they heat up quickly in summer and likewise, are very cold in winter. Another potential problem is corrosion.
WOOD
Wood is problematic in that it rots. You can extend the lifespan of a wooden container by lining it with plastic sheeting with holes in the bottom and painting the wood with a preserver.
OTHER MATERIALS
From old pots to jars and tins, repurposing and upcycling home items to use as quirky containers is a resourceful way to make container gardening a success.
Claudia de Yong, landscape/garden designer, gives her expert advice:
HANGING BASKETS
• Either keep it simple and fill with only one variety, such as trailing verbena, petunias or fuchsias, or go for dramatic combinations – try deep purple Verbena ‘Royale Plum Wine’, blowsy Petunia ‘Flamingo’ and the dainty trailing white Bacopa ‘Snowstorm’.
TROUGHS OR WINDOW BOXES
• Pair the tall fern-like scented Lavender ‘Spanish Eyes’ with another scented plant, such as Heliotrope ‘Midnight Sky’. Add some Phlox ‘21st CenturyBlue’ F1, which is great for attracting bees.
• For a bold display, try Dahlia ‘Totally Tangerine’ with purple Salvia ‘Amistad’ and an airy grass such as Panicum elegans ‘Frosted Explosion’. Use Erigeron ‘Karvinskianus’ around the edges and add Heuchera ‘Obsidian’ for drama.
• Another option is to team chocolate-scented Cosmos atrosanguineus with Nicotiana alata ‘Grandiflora’, which has a wonderful night scent. Add the soft grey foliage of Artemisia ‘Powis Castle’ and the tall feathery bronze fennel, Foeniculum vulgare ‘Purpureum’.
TALL POTS (AKA LONG TOMS)
• Verbena bonariensis is a great plant for tall pots, with long-lasting clusters of purple that look good alone or can be under-planted with delicate star-shaped Gaura lindheimeri ‘Whirling Butterflies’, adding dark purple Sedum telephium ‘Purple Emperor’ around the base.
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Olivia Heath is the Executive Digital Editor at House Beautiful UK, covering tomorrow's biggest interior design trends and revealing the best tips, tricks and hacks to help you decorate your home like a pro. Week by week Olivia shares the most stylish high street buys to help you get the look for less and showcases the best makeovers (who doesn't love a before & after?), as well as the hottest and most unique properties on the market.