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Rel. frost
Last spring frost (0°C) 6 Apr Normal year · 20 years of data
Frost-free season 224 days 6 Apr – 16 Nov

Vegetables

Plant Sow indoors Transplant Direct sow
Date Growing timeGrow. time Date Rel. frost Date Rel. frost
Cauliflower
Brassica oleracea (Botrytis-gruppen)
18 Mar – 1 Apr
5-7 wk
6 May
5 wk after
2 Apr
1 wk before
Broccoli
Brassica oleracea (Italica-gruppen)
12 – 26 Mar
4-6 wk
23 Apr
3 wk after
2 Apr
1 wk before
Chili pepper
Capsicum annuum
Fleece
9 Mar – 6 Apr
8-12 wk
1 Jun
8 wk after
Kale
Brassica oleracea (Curly Kale-gruppen)
23 Jan – 6 Feb
5-7 wk
13 Mar
4 wk before
29 Mar
2 wk before
Cucumber
Cucumis sativus
Fleece
4 – 11 May
3-4 wk
1 Jun
8 wk after
Florence Fennel
Foeniculum vulgare
Fleece
27 Apr – 4 May
4-5 wk
1 Jun
8 wk after
2 May
4 wk after
Butter bean
Phaseolus lunatus
Season too short
19 – 26 Apr
3-4 wk
17 May
6 wk after
Onion
Allium cepa (Cepa-gruppen)
12 Jan – 9 Feb
8-12 wk
6 Apr
Vid frost
19 Apr
2 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
Season too short
24 Mar
2 wk before
Sweetcorn
Zea mays
Season too short
11 – 18 Apr
3-4 wk
9 May
5 wk after
Chard
Beta vulgaris (Flavescens-gruppen)
8 – 15 Apr
3-4 wk
6 May
5 wk after
19 Apr
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
29 Mar
2 wk before
Cavolo nero
Brassica oleracea (Palm Kale-gruppen)
23 Jan – 6 Feb
5-7 wk
13 Mar
4 wk before
29 Mar
2 wk before
Potato
Solanum tuberosum
Season too short
3 – 17 Feb
4-6 wk
17 Mar
3 wk before
17 Mar
3 wk before
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
23 Jan – 6 Feb
5-7 wk
13 Mar
4 wk before
2 Apr
1 wk before
Pumpkin
Cucurbita pepo
Fleece
4 – 11 May
3-4 wk
1 Jun
8 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
8 – 15 Apr
3-4 wk
6 May
5 wk after
19 Apr
2 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
12 – 26 Mar
4-6 wk
23 Apr
3 wk after
Lettuce
Lactuca sativa
2 – 9 Mar
3-4 wk
30 Mar
1 wk before
2 Apr
1 wk before
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
16 Feb – 2 Mar
4-6 wk
30 Mar
1 wk before
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
Season too short
22 Jan – 5 Feb
2-4 wk
19 Feb
7 wk before
19 Feb
7 wk before
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
Season too short
3 Mar
5 wk before
Spinach
Spinacia oleracea
22 Feb – 1 Mar
3-4 wk
22 Mar
3 wk before
24 Mar
3 wk before
Sweet potato
Ipomoea batatas
24 Apr – 8 May
4-6 wk
5 Jun
11 wk after
Tomato
Solanum lycopersicum
29 Mar – 12 Apr
6-8 wk
24 May
8 wk after
Tomatillo
Physalis ixocarpa
French bean
Phaseolus vulgaris
26 Apr – 10 May
2-4 wk
24 May
8 wk after
17 May
6 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
12 – 26 Mar
4-6 wk
23 Apr
3 wk after
Pea
Pisum sativum
22 Feb – 1 Mar
3-4 wk
22 Mar
3 wk before
2 Apr
1 wk before
Current date Soon Date passed

Herbs

Plant Sow indoors Transplant Direct sow
Date Growing timeGrow. time Date Rel. frost Date Rel. frost
Basil
Ocimum basilicum
Season too short
28 Mar – 11 Apr
4-6 wk
9 May
5 wk after
Lemon balm
Melissa officinalis
26 Jan – 9 Feb
8-10 wk
6 Apr
Vid frost
1 May
4 wk after
Dill
Anethum graveolens
2 Apr
1 wk before
Chives
Allium schoenoprasum
16 – 30 Jan
6-8 wk
13 Mar
4 wk before
2 Apr
1 wk before
Spearmint
Mentha spicata
28 Dec – 25 Jan
8-12 wk
22 Mar
3 wk before
1 May
4 wk after
Coriander
Coriandrum sativum
19 Apr
2 wk after
Sage
Salvia officinalis
25 Feb – 11 Mar
8-10 wk
6 May
5 wk after
Thyme
Thymus vulgaris
12 – 26 Feb
8-10 wk
23 Apr
3 wk after
Oregano
Origanum vulgare
15 Feb – 1 Mar
6-8 wk
12 Apr
1 wk after
1 May
4 wk after
Parsley
Petroselinum crispum
25 Jan – 8 Feb
6-8 wk
22 Mar
3 wk before
2 Apr
1 wk before
Rosemary
Salvia rosmarinus
28 Jan – 25 Feb
10-14 wk
6 May
5 wk after
Current date Soon Date passed

Annual flowers

Plant Sow indoors Transplant Direct sow
Date Growing timeGrow. time Date Rel. frost Date Rel. frost
Morning glory
Ipomoea tricolor
Greenhouse
4 – 11 May
3-4 wk
1 Jun
8 wk after
Cornflower
Centaurea cyanus
22 Mar
3 wk before
2 Apr
1 wk before
Statice
Limonium sinuatum
15 – 29 Mar
8-10 wk
24 May
8 wk after
Sweet William
Dianthus barbatus
25 Jan – 8 Feb
6-8 wk
22 Mar
3 wk before
14 Apr
1 wk after
Snow-on-the-mountain
Euphorbia marginata
29 Mar – 12 Apr
6-8 wk
24 May
8 wk after
16 Jun
11 wk after
Dahlia
Dahlia × pinnata
24 Mar – 7 Apr
6-8 wk
19 May
7 wk after
Dahlia (tubers)
Dahlia × pinnata
Season too short
8 Feb – 8 Mar
4-8 wk
5 Apr
5 Apr
Foxglove
Digitalis purpurea
11 – 25 Jan
8-10 wk
22 Mar
3 wk before
19 Apr
2 wk after
Busy lizzie
Impatiens walleriana
Fleece
9 Mar – 6 Apr
8-12 wk
1 Jun
8 wk after
Creeping zinnia
Sanvitalia procumbens
29 Mar – 12 Apr
6-8 wk
24 May
8 wk after
Hyacinth bean
Dolichos lablab
Season too short
20 Apr – 4 May
4-6 wk
1 Jun
8 wk after
Chinese lantern
Physalis alkekengi
25 Feb – 11 Mar
8-10 wk
6 May
5 wk after
Love in a mist
Nigella damascena
2 Apr
1 wk before
Strawflower
Xerochrysum bracteatum
29 Mar – 12 Apr
6-8 wk
24 May
8 wk after
16 Jun
11 wk after
Tall verbena
Verbena bonariensis
11 Feb – 11 Mar
8-12 wk
6 May
5 wk after
Cardoon
Cynara cardunculus
Greenhouse
7 Feb – 7 Mar
8-12 wk
2 May
4 wk after
Regal-foxtail
Ptilotus nobilis
Fleece
9 Mar – 6 Apr
8-12 wk
1 Jun
8 wk after
Globe amaranth
Gomphrena globosa
Fleece
6 – 20 Apr
6-8 wk
1 Jun
8 wk after
Corn poppy
Papaver rhoeas
2 Apr
1 wk before
Snapdragon
Antirrhinum majus
5 Jan – 2 Feb
8-12 wk
30 Mar
1 wk before
14 Apr
1 wk after
Flossflower
Ageratum houstonianum
Fleece
23 Mar – 6 Apr
8-10 wk
1 Jun
8 wk after
Sweet pea
Lathyrus odoratus
25 Jan – 15 Feb
5-8 wk
22 Mar
3 wk before
Stock
Matthiola incana
2 – 16 Feb
6-8 wk
30 Mar
1 wk before
19 Apr
2 wk after
Wormwood
Artemisia absinthium
25 Jan – 8 Feb
6-8 wk
22 Mar
3 wk before
19 Apr
2 wk after
Mexican sunflower
Tithonia rotundifolia
Fleece
20 Apr – 4 May
4-6 wk
1 Jun
8 wk after
Pansy
Viola × wittrockiana
2 – 16 Jan
8-10 wk
13 Mar
4 wk before
14 Apr
1 wk after
Petunia
Petunia
1 – 29 Mar
8-12 wk
24 May
8 wk after
Scabious
Scabiosa atropurpurea
11 – 25 Mar
6-8 wk
6 May
5 wk after
17 May
6 wk after
Zinnia
Zinnia elegans
12 – 26 Apr
4-6 wk
24 May
8 wk after
Common morning glory
Ipomoea purpurea
Fleece
27 Apr – 11 May
3-5 wk
1 Jun
8 wk after
Cosmos
Cosmos bipinnatus
12 – 26 Apr
4-6 wk
24 May
8 wk after
17 May
6 wk after
Scarlet milkweed
Asclepias curassavica
Greenhouse
9 Mar – 6 Apr
8-12 wk
1 Jun
8 wk after
Bee balm
Monarda didyma
12 Jan – 9 Feb
8-12 wk
6 Apr
Vid frost
1 May
4 wk after
Yarrow
Achillea millefolium
25 Jan – 8 Feb
6-8 wk
22 Mar
3 wk before
19 Apr
2 wk after
Safflower
Carthamus tinctorius
22 Mar
3 wk before
2 Apr
1 wk before
Iceland poppy
Papaver nudicaule
16 – 30 Jan
6-8 wk
13 Mar
4 wk before
29 Mar
2 wk before
Bishop's flower
Ammi majus
6 – 20 Mar
4-6 wk
17 Apr
2 wk after
19 Apr
2 wk after
Drumsticks
Pycnosorus globosus
Greenhouse
22 Feb – 8 Mar
10-12 wk
17 May
6 wk after
Sunflower
Helianthus annuus
26 Apr – 3 May
3-4 wk
24 May
8 wk after
1 May
4 wk after
China aster
Callistephus chinensis
Fleece
22 Mar – 5 Apr
6-8 wk
17 May
6 wk after
2 May
4 wk after
Annual phlox
Phlox drummondii
17 – 31 Mar
6-8 wk
12 May
6 wk after
17 May
6 wk after
Hollyhock
Alcea rosea
25 Jan – 8 Feb
6-8 wk
22 Mar
3 wk before
19 Apr
2 wk after
Delphinium
Delphinium elatum
29 Jan – 26 Feb
8-12 wk
23 Apr
3 wk after
1 May
4 wk after
African marigold
Tagetes erecta
29 Mar – 12 Apr
6-8 wk
24 May
8 wk after
Black-eyed Susan
Rudbeckia hirta
11 – 25 Mar
6-8 wk
6 May
5 wk after
17 May
6 wk after
Woodland sage
Salvia nemorosa
1 – 15 Feb
8-10 wk
12 Apr
1 wk after
1 May
4 wk after
Black-eyed susan vine
Thunbergia alata
Fleece
23 Mar – 20 Apr
6-10 wk
1 Jun
8 wk after
California goldenpoppy
Eschscholzia californica
2 Apr
1 wk before
Painted tongue
Salpiglossis sinuata
15 – 29 Mar
8-10 wk
24 May
8 wk after
Water forget-me-not
Myosotis scorpioides
25 Jan – 8 Feb
6-8 wk
22 Mar
3 wk before
19 Apr
2 wk after
Current date Soon Date passed