Garden Planters & Containers: Design, Planting & Care for Year-Round Impact

Old sinks as rock-garden containers discussed elsewhere. "Containerised" plants offer broader advantages: mobility for changing effects (prime plants forward, spent ones hidden), permanent + seasonal mixing. A well-chosen shrub in a suitable container gains a pedestal — branches hang elegantly over edges instead of brushing soil or tangling with lower plants.

Personal favorite: 60 cm marine plywood tub, 10 years. Pieris forrestii + dwarf white azalea (Rhododendron mucronatum). Weeks of spring brilliance: scarlet new growth/flowers (pieris), then azalea takeover. Early summer: morning glories (Ipomoea) clambering branches with blue trumpets. Winter: two tidy evergreens. Proves container advantage: difficult soil no barrier — lime-haters flourished in chalky area in prepared compost.

Urns, Pots & Planters

Enormous range: antique stone/lead urns to simple pots. Few afford antiques, but good reproductions in reconstituted stone/fibreglass exist. Interior must hold sufficient soil for plant health — otherwise container becomes pure ornament needing exceptional visual quality.

Modern simple shapes (asbestos/concrete "planters") suit contemporary patios. Soil depth often insufficient. Saucers look good but hard to maintain plants. Circular concrete sewer pipes = near-raised beds, architectural in cobbles/granite sets, sides "Snowcemmed" to tone with buildings.

DIY containers: rot-resistant marine plywood. Half-barrels, old breadcrocks. Drainage must be perfect — drill holes if needed. Terracotta/earthenware: electric drill, ring of small holes, knock out center 1–2 in.

Growing Medium

Container gardening = concentrated gardening. Clear feeding regime for multi-year health. Soil must be right.

Few pots? Buy prepared compost. John Innes No. 3 — open texture, long nutrient release. Larger scale? Mix yourself. John Innes recipe: 7 parts sterilised loam, 3 parts moss peat, 2 parts coarse grit, fertiliser additive 1 kg/m³ (2 lb/yd³). Home mix: 6 parts garden soil, 3 peat, 2 grit + 1 kg John Innes base per m³. If garden soil = intractable clay, thin sand, chalk lumps — find better source.

What to Plant

Single shrub for year-round effect + October-planted bulbs (spring interest) → replaced by summer annuals.

Main plant choice critical — visible most/all year. Ideal: good appearance, scented flowers, edible ornamental fruit. Citrus = paragon (not for chilly northern Europe). Explains historic orange/orangery obsession. Heated greenhouse? Single fruiting bush outdoors in summer.

If not all in one: prioritize length of interest + confined tolerance + accidental neglect resilience. Camellias fail here — one dry late summer = all next year's buds drop.

Shape/leaf effect must complement architectural setting.

Shade: Fatsia japonica, Japanese maple (distinctive foliage).
Sun: Yuccas (esp. variegated), New Zealand flax (Phormium) — striking. Hebes — long flowering, elegant evergreen foliage (except harshest weather).

Flowers for Summer

Tubs/pots = summer flower riots. Choose good-shape developers: petunias cascade, double pot effectiveness. Avoid tight upright French marigolds = Lilliputian soldiers in orange hats.

Large containers: mix foliage + flowers. Central Senecio cineraria + geraniums, or mounded fuchsias + Helichrysum lanatum. Early June = safe for tender plants (shops sell from Easter — trap). Unheated conservatory? Buy, pot separately, start early, plant out. Smaller scale: bathroom/kitchen windowsills for May.

Generous planting: edge plants lean out for cascade + top space. Concentrate in few grouped containers > strewn about. More effective, less time, less cost.

Plants That Stand the Cold

Autumn frosts kill tender sub-tropicals. Conservatory/spare bedroom? September cuttings (except true annuals), pot geraniums. Containers empty → spring bedding: Nov-planted tulips/daffodils/hyacinths + wallflowers. But forlorn in prominent spots (front door). Few pots this way, sheltered till April peak. Ivy pots sunk in garden corner all summer → November front-of-house stars.

Window Boxes

All above applies — elongated containers with specific job. Cascading plants critical: delightful outside, inside view not just stalk forest. Frame building + indoor room matter. Avoid scarlet geraniums vs. red brick. Scented flowers if window opens. Herbs in kitchen window box.

Care of Container Plants

More critical than open garden — limited food/water reserves. Permanent plants: fortnightly liquid feeds Apr–Sep. Post-winter unhealthy? Foliar feed. Annuals in boxes/pots: weekly summer feed. Water = adequate = daily in hot spells when root-bound.

Limit plant count and site carefully. Avoid hard-to-water boxes or distant taps. Plan for summer holidays. Well-used = concentrated color/architectural effect worth the trouble.