loading

Matthiola incana 'Rainbow Mixture'

traditional field-grown column stocks

Product Image
Unrivalled for their scent, this stock seed mix now gives you every colour under the sun (or should that be raincloud?) Easy to grow, ‘Rainbow Mixture’ is beautiful, blousy, and blooming with tall, fluffy flowers in a multitude of shades making for an exuberant and fragrant cut flower vase. Sown in early spring under glass, a fragrant bed of stocks in the garden can be had in as little as 90 days, and a succession of sowings will provide continuous flower and scent to summer borders well into autumn.

How to care for Matthiola incana Rainbow Mixture:

Plant in a sunny spot with well-drained, fertile soil, adding well-rotted compost to the planting area and backfill. Space Matthiola about 30cm (12in) apart to allow good air circulation and reduce the risk of mildew.

Keep watered during dry spells and apply a monthly, liquid, general-purpose fertiliser during the growing season. Pinch out the top as they grow to encourage branching and more flower spikes, cutting back the main stem once flowers have faded to encourage side shoots to bloom too.

Sowing instructions:

Sow indoors from March to April or directly outside from April to May once the soil has warmed. Choose a sunny or lightly shaded spot with well-drained soil. Sow thinly in drills about 0.5cm (¼in) deep and cover lightly with fine soil. Water gently and keep the soil moist but not waterlogged.

Germination usually takes 7-14 days at temperatures around 15-18°C (59-64°F). Thin seedlings to around 15cm (6in) apart when large enough to handle. This is a fast-growing annual, so sow in succession every few weeks for prolonged flowering through summer. Avoid overfeeding, as this can encourage leafy growth at the expense of flowers.
Flowering period:
  • Jan
  • Feb
  • Mar
  • Apr
  • May
  • Jun
  • Jul
  • Aug
  • Sep
  • Oct
  • Nov
  • Dec
Eventual height:
0.75m
Eventual spread:
0.2m
Position:

Full sun

Rate of growth:

Fast-growing

Soil:

Moderately fertile, moist but well-drained soil, or peat-free general purpose compost

Hardiness:

Borderline hardy (will need protection in winter in colder areas)

Product options

Product options image
SD30001280
approx 100 seeds
£4.19
shipped within 2 weeks
1
Delivery options (pick your preferred option at checkout)
Seed Packets (only)£2.99

Goes well with

Become an RHS Member today and save 25% on your first year