Leafy green
Watercress
Nasturtium officinale
Grow in a pot stood in a tray of water — peppery superfood.
Partial sun
Frequent
Constantly moist
Easy
Yes
Leaves
Perennial
Hardy
5 L
15 cm
Brassica
Pak Choi
Watercress's peppery compounds repel flea beetles that commonly attack pak choi leaves.
Leafy green
Rocket
Both cool-season brassicas grow simultaneously in moist conditions, allowing succession planting in the same garden space.
Leafy green
Spinach
Both thrive in cool, moist conditions and use different soil depths without competing for nutrients.
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.
Shady corner
North-facing patch, under a tree, or in the lee of a building.
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.
Water jar
A jam jar of water on the sill — no soil at all. Regrow from kitchen scraps.
Root in water, transfer to soil
14 days
★★★★★
Yes
How to do it
Stand supermarket sprigs (with stems intact) in a glass of cold water on a bright sill. Refresh every 2 days. Roots in 3–5 days; pot in damp compost or grow on as a windowsill water plant.
What to expect
Spicy, peppery leaves within 2 weeks — keep cutting.
Honest note
Loves cool weather; bolts in midsummer indoors.
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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