let is sow organic seed sowing kit - 12 day advent calendar

12 days of Christmas 'LET IT SOW' organic seed sowing kit

Thank you for purchasing a Let It Sow – 12 days of Christmas organic seed sowing kit! Please find below more helpful information about your kit’s seeds, compost and more

let is sow 12 day organic seed advent calendar

Celebrate the 12 Days of Christmas with my ‘Let it Sow’ organic seed sowing kit.

This kit contains 12 gift boxes, each containing a unique organic seed packet, organic compost, organic compostable pot, and instructions. Created plastic-free, with organic materials, and made by hand.

Each gift box includes

  • A seed packed with Soil Association Certified organic vegetable, herb, or flower seeds
  • A peat-free organic compost pellet
  • An RHP Certified organic compostable pot
  • Instructions on how to plant your seeds


This 12 day kit is great for novice gardeners and the more green-fingered alike. A perfect activity for the whole family.


All seeds provided in the kit are certified organic by the Soil Association.

Brussel Sprout Groninger Organic. An excellent second early mid season variety producing neat and tight sprouts. RHS award of Garden Merit.

Cultivation Advice Brussel Sprout Groninger Organic

Days To Maturity:  90

Days To Germination: 7-14

Planting Depth:  1/8 inch

Spacing, Row:   24-36 inches

Spacing, Plant:  18-24 inches

Seed: 2-4 inches

Light:  Sunny Location

Sow in early spring, 1/8 inch deep. keep moderately moist during germination. Harden seedlings then plant outdoors 18-24inches apart.

For an early crop start seeds indoors in the earliest part of spring.

Or direct sow seeds outdoors in late Spring after last frost (Apr-Jun).

Cover seed with 1/8 inch fine soil.

Keep soil moderately moist during germination.

When seedlings are 2 inches tall indoors, thin to 2 inches apart or transplant to individual pots.

Transplant seedlings outdoors after hardening off, when danger of serious frost has passed.

Space plants 18 to 24 inches apart in rows 2 to 3 feet apart depending upon available garden space.

Brussels Sprouts grow best in a sunny location with fairly rich well drained compacted soil.

Harvest sprouts from bottom of plant up as heads mature.

Do not grow in same area of garden where members of cabbage family were grown the year before.

Onion Bunching (Spring) White Lisbon Organic
Sow in early spring plant seeds thinly depth 1/4 to 1/2 inch. When transplanting, clip plants to three inches and plant 2 inches deep. Harvest young plants within 120 days.

Onion Bunching (Spring) White Lisbon Organic. The white Lisbon is traditionally the most popular Spring Onion for succession sowings and features long, white stems and bright green tops. Delicious when young and takes on a more pungent flavour as the bulbs swell. Can be used as a companion plant to deter carrot fly.

Cultivation Advice Onion Bunching (Spring) White Lisbon Organic
Days to Germination: 10-14
Days To Harvest:  60-120
Planting Depth: 1/2″
Spacing, Row: 12-18 inches
Spacing, Plant: 1-2 inches
Light:  Full Sun or Partial Shade

For the finest onions, seed directly outdoors, depth 1/4 to 1/2 inch, in full sun to partial shade and well drained soil as soon as the ground can be worked in Spring.

Planting Space rows 12 inches apart.  Scatter seed in the row at the rate of 3 seeds per inch.

Seed can be started indoors 8-10 weeks before transplanting outdoors.  When transplanting, clip plants to three inches and plant 2 inches deep

When seedlings are 3 inches high, thin to stand 2 to 3 inches apart.

Harvest young plants in 60 days or up to 120 days for mature plants.

Fertile, moist soil enriched with compost is best for onion production.


Start seed indoors in early spring (5-7 weeks before planting outdoors). Sow 2-3 seeds together every 12-18 inches. Planting depth 1/8 inch.

Cabbage Red Acre Organic. This popular deep red compact variety is a heavy producer of tasty round 6-7 inch solid round heads. Vigorous plants are easy to grow, for late summer / early autumn harvesting. The colourful vitamin-rich heads are delicious cooked or raw in salads and coleslaw. 70-80 days to maturity.

Cultivation Advice Cabbage Red Acre Organic

Days to Germination: 10-15
Days To Maturity:  75
Planting Depth: 1/8″
Spacing, Row: 18-24 inches
Spacing, Plant: 12-18″
Light: Sunny Location

Start seed indoors or in greenhouse in early spring (5-7 weeks before planting outdoors). Or plant directly outdoors in mid spring or early summer when last frost has passed. Sow 2-3 seeds together every 12-18 inches. Planting depth 1/8 inch.

When seedlings are 1 inch tall thin to one plant every 12-18 inches.

Plant cabbage in a sunny location where no cabbage was grown the year before.

Keep weed free, moist and protect against pests. 

Sow in early spring 1.5cm deep. Gradually harden off after all risk of frost has passed. Regularly dead head to produce more flowers.

Herb German Chamomile Organic (Matricaria recuita) is a pleasantly sweet scented native annual herb with small, white, highly aromatic, Daisy-like flowers. These are traditional dried and have been used in numerous treatments from toothache to haemorrhoids for centuries.

They are also used in flavouring such things as the liqueur Benedictine and for enhancing fruit flavours. Unlike its similar (Roman) cousin this is a taller plant reaching 24-30″ with fern-like light green and feathery whereas. Roman chamomile has finely divided parsley-like leaves that are thicker and flatter than German chamomile. German chamomile does well in poor, clay soil whereas its close cousin, the Roman chamomile prefers well-drained and moderately fertile soil. Although both chamomiles thrive in open, sunny locations, German chamomile is best in hot, drier locations . It will also grow in lightly-shaded areas.

Cultivation Advice Herb German Chamomile Organic

Direct broadcast sow seed outdoors, sparingly onto soil that has been raked to a fine till cleared of any annual weeds and rake in gently, being careful not to bury seeds.

Best sown from early spring onwards.

Thin for a final spacing of 4-6”.

Harvest flower heads regularly for best yields


Ideal for containers – In the spring plant thinly 1/4 – 1/2 inches deep. Harden off before planting out.

Organic Herb Coriander. An annual or biennial herb (Coriandrun sativum), of the Parsley Family. Grown both for it’s aromatic seeds, they  are use for flavouring liquors and confections and leaves. Which are similar to parsley with a dash of citrus flavour.

Cultivation Advice Organic Herb Coriander

Ideal for containers / windowsills or open ground with well draining soil and full sun.

You can sown heat undercover or indoors 6 weeks before planting out

or directly outdoors after the last frost.

Germination takes 7-14 days depending on temperature.

These do not like being disturb with thinning’s unlikely to prosper.

Harden off before planting out seedlings raised under-cover.

Plants should ideally be spaced 9-12 inches apart and will grow to around 18-24 inches at maturity.

Plants mature from germination in 6-8 weeks.

Sow in spring. Plant 1/4 inch deep. Transplant to 12 inches apart when plants are 2 to 3 inches tall. Gradually acclimatise outside after all danger of frost has passed.

FLOWER COSMOS BIPINNATUS SEASHELLS organic. An Heirloom variety from the 1800’s producing an exquisite display of tubular-petalled blooms somewhat similar to a sea shell in lovely pastel colours of white, pink, rose and crimson on tall and busy plants with delightful lacy fern-like foliage. The delicate foliage and colourful flowers make an outstanding background planting that blooms all summer long. Cosmos are easy to grow and literally thrive on neglect. Half-hardy annual, 4-5′ tall.

(Soil Association Certified Organic Seed)


Days To Germination: 5-10

Planting Depth: 1/4 inch

Spacing, Plant: 12 inches

Plant Height: 36-48 inches

Light: Full Sun

Sow early indoors / under cover with warmth 4-6 weeks prior to the last frost in individual pots or trays.

Cover seed with 1/4 inch fine soil. Keep soil moderately moist and warm during germination.

Can be sown directly outdoors after danger of frost has passed through early summer.

Thin or transplant to 12 inches apart when plants are 2 to 3 inches tall.

Gradually acclimatise outside after all danger of frost has passed.

Cosmos grows best in full sun in ordinary garden soil and may re-sow itself.

Fairly drought resistant, water only when soil is dry for an extended period.


Sow seeds in Spring after the last frost. Thinly Sow 1cm deep. Thin seedlings, plant out at 5cm tall after all risk of frost has passed.

Beetroot Detroit Dark Red Organic. Round, well coloured tender roots with dark red, sweet flesh up to 3-4in across.  Ideal for staggered rows over a long season.  The leafy tops can also be used as a tasty spinach substitute.

Beetroot Detroit Dark Red Organic

Sow seeds in situ in Spring after the last frost when the ground has warmed up

and then plant successive sowings to early summer.

Thinly Sow 1cm deep in rows 30cm apart.

Thin seedlings to 8cm apart.

Early sowings can be made indoors / heated greenhouse in modules /

trays and planted out at 5cm tall after all risk of frost has passed.

Pre soaking seed in warm water 0.5 – 1 hour before sowing will speed up germination.


Sow seed thinly 1/8 to 1/4 inch under soil. Transplant to larger container or in the ground when 2-4 inches tall.  

French or flat parsley generally has a sweet more delicate flavour than curled parsley making it ideal for more general cooking use.  The plants are vigorous with district flat leaves.  Ideal for growing in the Veg patch, containers or the kitchen windowsill.


Days To Maturity:  70

Days To Germinate:  18-24

Planting Depth:  1/8 to 1/4 inch

Spacing, Row:   12-16 inches

Spacing, Plant:  4 inches

Light:  Full Sun or Partial Shade

Sow seed thinly directly outdoors from mid spring onwards in a sheltered position as soon as soil is workable and cover with 1/8 to 1/4 inch fine soil.

To speed germination, seed can be soaked in warm water for 24 hours before planting.

Plant on a windowsill throughout the year.

Thin outdoor plants to 6 inches apart when seedlings are 2 inches high. Indoor windowsill pots can be left to pick young as does not transplant well.

Harvest leaves continually during the growing season to encourage new growth.  Harvest larger sprigs off plants as they mature.

Parsley grows best in a mostly sunny location with relatively rich, moist, well drained soil.

Plants are quite cold hardy and can usually be harvested into the winter.


Sow in early spring under-cover, plant a single seed 1in deep per pot. Gradually harden off after all risk of frost has passed. Ensure plants have support canes or string. Keep well watered.

Runner Bean Enorma Organic. A Prize winning variety with extremely long smooth 50cm pods, early, vigorous and very high yielding with an excellent flavour. The variety of choice as an exhibition plant. Given an R.H.S Award of Merit.

Cultivation Advice Runner Bean Enorma Organic

Pre-prepare growing site with ample organic matter.

Sow in early spring under-cover in warmth a single seed 1in depth per pot.

Gradually harden off after all risk of frost has passed.

Alternatively plant direct outside after the soil temperature is above 50F in late spring.

Protect young plants from pests.

Ensure plants have support to ramble (canes / wire / netting).

Keep well watered whilst flowers are setting.

Pick regularly to encourage the plants to keep flowering

Sow seeds thinly from late spring until autumn. When large enough to handle plant out at least 9 inches between plants. Don’t pull the entire plant, keep harvesting to encourage growth.

Lettuce Salad Bowl Green Organic. A superb long lasting variety, large, medium-green, slow bolting, non-heading and decidedly tender variety that will provide a steady supply of leaves over an extended period . Don’t pull the whole plants – be selective – go down the row choosing only the largest, tenderest leaves. This way the Salad Bowl will continue to replace itself the whole season.

Cultivation Advice Lettuce Salad Bowl Green Organic

Sow from late spring until autumn in drills or under cover from the last frost until winter.

When large enough to handle plant out ensuring at least 9 inches between plants.

Keep moist during dry weather.

Don’t pull the entire plant,

keep harvesting leaves to encourage further tender growth.


Sow in from the last frost, plant seeds thinly 1/4in deep per pot.

Radish Saxa 2 Organic. An early, sweet variety of radish producing brilliant red, round roots which will stay crisp over a long period. A must for every allotment and veg patch alike.

Sow in early spring 1/16 inch deep. Transplant the seedlings when large enough to handle into 3 inch pots. When about 8 inches tall, either plant in their growing position 18 inches apart.

TOMATO – CHADWICK CHERRY ORGANIC new. An excellent Heirloom Cherry tomato delivering large crops of very sweet, juicy red large cherry tomatoes of sweet flavour. The vines are indeterminate, very vigorous, and productive with above average disease resistance.


Sow in spring under glass or on a windowsill 1/16 inch deep. Germination takes around 6-14 days at 65-75F.

Transplant the seedlings when large enough to handle into 3 inch pots.

Grow on under cooler conditions and when about 8 inches tall,

either plant in their growing position in the greenhouse

or gradually acclimatise them to outdoor conditions

and plant out 18 inches apart in a warm and sunny spot in moist,

fertile well drained soil and keep watered.

Compostable Pots & compost

Compostable pots – Our organic seed sowing kits offer the highest quality compostable pots through the innovations of Jiffy Growing Solutions.  Each pot is certified for home composting and certified organic.  Created with zero chemicals and with sustainable materials to ensure a low carbon foot print and the ability to yield high quality plants.

Compost Pellets – Each coconut pellet is made of organic coconut coir which has been sustainably repurposed from the production of coconuts.

Using your coconut coir pellets: Soak in water, indentation side up until fully expanded.  Place one into your provided compostable pot and sow your seed(s) in the coir as directed below.