Herb
St John's wort
Hypericum perforatum
St John's wort is a hardy perennial herb with bright yellow flowers traditionally used for medicinal purposes. It thrives in sunny locations with minimal care and can spread vigorously.
Full sun
Low
Well-draining, tolerates poor to average soil, prefers slightly alkaline pH
Very easy
Yes
Flowers, leaves (medicinal use)
Annual
Hardy
3 L
15 cm
No specific companions — keep this one in its own pot.
Situations where this plant is a reliable fit — from someone's kitchen sill to a wind-blown rooftop.
Windowsill
Bright indoor light, small pot, no outdoor access — the classic kitchen sill.
Balcony
A few pots on a flat outdoor perch — some sun, some wind.
Rooftop
Full sun, hot in summer, wind-battered — pick tough, drought-tolerant plants.
Vertical wall pocket
Living-wall pouches or stacked planters — very shallow roots only.
Ladder planter
A tilted step-ladder with a shallow tray on each rung — sun-facing, five tiers of herbs, salad and strawberries in the footprint of one pot.
Pallet wall garden
A wooden pallet stood upright and lined with landscape fabric — every slat becomes a shallow salad-or-herb pocket. Cheap, huge productive area, needs frequent watering.
Pocket planter
A canvas or felt panel of sewn-in pockets, hung on a sunny wall — instant vertical garden, works well on a balcony rail too.
Wooden crate
A shallow wine or veg crate lined with hessian — perfect for salad and shallow-rooted herbs.
Raised bed
A traditional plot or timber-sided bed — deepest root run, widest planting choice.
Where to source
Get growing in United Kingdom
Shop local first
The best plants come from a real nursery, and the best trowel comes from the old-fashioned ironmonger down the road — people who know their stock and can advise. Try local first, both for the plant and the kit. It keeps small growers and small hardware shops alive.
Searching near London
For pots, compost, seed trays, twine and other kit — Amazon has the essentials if the local option isn't right. Not a plant nursery; use the local map above for the plant itself.
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