Cut Flowers

Why grow cut flowers?

Flowers brighten rooms, mark the seasons, and offer mindful, steady routines — sow, water, pick, arrange. They also feed bees and hoverflies, making edible crops nearby more productive.

Grow anywhere: containers beyond pots

Improvised and upcycled containers work beautifully — sturdy tins and food buckets with 4–6 drainage holes, wooden fruit crates lined with hessian, colanders and old drawers, even guttering runs on fences for trailing violas and alyssum. Stability first: use wide bases and ties for balconies and rails, and add bricks in the bottom for wind safety.

Container sizes that work

Soil mix & feeding

A reliable container mix: 60% peat-free compost, 30% fine bark or composted wood fibre, 10% perlite or grit for drainage, plus slow-release fertiliser (10–12 weeks). Feeding rhythm: water only for the first 4 weeks, then weekly liquid feed at half strength. Heavy feeders like dahlia and zinnia want twice-weekly feeds in hot spells. Top-dress mid-season with 1–2 cm of fresh compost.

What to grow — compact, pot-friendly

• Hardy annuals (cool-tolerant): calendula, cornflower, nigella, ammi, scabious, dill, larkspur. Autumn sow in mild regions; spring sow elsewhere.
• Half-hardy: cosmos, snapdragon, rudbeckia, zinnia (warm), celosia (very warm), dwarf sunflowers. Plant out when nights stay above 8–10°C.
• Perennial & biennial stars: salvias (nemorosa, microphylla), wallflowers, lavender, sweet William, compact foxglove. Salvias bring long bloom and pollinators; wallflowers bring spring scent.

Bulbs, corms & tubers

• Spring: tulips (plant November for tall stems), narcissus, alliums.
• Summer: lilies (stake), gladioli (stagger plantings every 2 weeks), dahlias (1 per 40 L tub).
• Drainage: pot feet and deep soaks — never let them sit in water.

Bulb lasagne — one pot, months of colour

1. 1Choose a 30–40 cm deep pot with large drainage holes.
2. 2Base layer: 10–12 cm compost, then your largest bulbs (tulips), points up.
3. 3Middle layer: 5–7 cm compost, mid bulbs (narcissus).
4. 4Top layer: 5–7 cm compost, small bulbs (crocus, muscari).
5. 5Finish with 5–7 cm compost, water in, and add winter violas on top if you like.

Stagger bloom times: early crocus → mid narcissus → late tulip for a rolling show.

All-year colour

• Spring: tulips, narcissus, wallflowers, early alliums.
• Summer: sweet peas, cosmos, cornflower, calendula, salvias.
• Autumn: dahlias, rudbeckia, late salvias, chrysanthemums.
• Winter: berried stems, evergreen foliage, hellebores in pots.

Simple colour palettes

Pick one base + one accent + one highlight and repeat across containers for cohesion.

Arranging — from mini to statement

• Mini jars & posies: sweet peas, violas, small cosmos, herbs. Cut in the cool; strip leaves below the water line.
• Kitchen jug: cosmos, salvias, calendula, wallflowers, ammi. One 'air' element (ammi, grasses) keeps it light.
• Statement vase: dahlias, gladioli, lilies. Add foliage structure first. Odd numbers (3, 5, 7) of focal stems work well.
• Conditioning: re-cut stems under water, rest 2–4 hours cool. A pinch of sugar + citric acid + tiny bleach makes a passable preservative.

Sowing & planting calendar

Shift timings 2–3 weeks later in colder/windy regions, or 2–3 weeks earlier in mild conditions or under cover.

Shortcut

When in doubt, sow later. A strong May planting often beats a weak early start.