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Rel. frost
Last spring frost (0°C) 16 Apr Normal year · 20 years of data
Frost-free season 205 days 16 Apr – 7 Nov

Vegetables

Plant Sow indoors Transplant Direct sow
Date Growing timeGrow. time Date Rel. frost Date Rel. frost
Cauliflower
Brassica oleracea (Botrytis-gruppen)
30 Mar – 13 Apr
5-7 wk
18 May
5 wk after
10 Apr
1 wk before
Broccoli
Brassica oleracea (Italica-gruppen)
25 Mar – 8 Apr
4-6 wk
6 May
3 wk after
10 Apr
1 wk before
Chili pepper
Capsicum annuum
Greenhouse
4 Mar – 1 Apr
8-12 wk
27 May
6 wk after
Kale
Brassica oleracea (Curly Kale-gruppen)
27 Jan – 10 Feb
5-7 wk
17 Mar
4 wk before
3 Apr
2 wk before
Cucumber
Cucumis sativus
Fleece
14 – 21 May
3-4 wk
11 Jun
8 wk after
Florence Fennel
Foeniculum vulgare
Greenhouse
22 – 29 Apr
4-5 wk
27 May
6 wk after
29 Apr
2 wk after
Butter bean
Phaseolus lunatus
Greenhouse
29 Apr – 6 May
3-4 wk
27 May
6 wk after
Onion
Allium cepa (Cepa-gruppen)
22 Jan – 19 Feb
8-12 wk
16 Apr
Vid frost
29 Apr
2 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
29 Apr
2 wk after
29 Apr
2 wk after
Sweetcorn
Zea mays
Fleece
4 – 11 May
3-4 wk
1 Jun
7 wk after
Chard
Beta vulgaris (Flavescens-gruppen)
20 – 27 Apr
3-4 wk
18 May
5 wk after
29 Apr
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
3 Apr
2 wk before
Cavolo nero
Brassica oleracea (Palm Kale-gruppen)
27 Jan – 10 Feb
5-7 wk
17 Mar
4 wk before
3 Apr
2 wk before
Potato
Solanum tuberosum
10 – 24 Mar
4-6 wk
21 Apr
1 wk after
21 Apr
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
27 Jan – 10 Feb
5-7 wk
17 Mar
4 wk before
10 Apr
1 wk before
Pumpkin
Cucurbita pepo
Fleece
14 – 21 May
3-4 wk
11 Jun
8 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
20 – 27 Apr
3-4 wk
18 May
5 wk after
29 Apr
2 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
25 Mar – 8 Apr
4-6 wk
6 May
3 wk after
Lettuce
Lactuca sativa
10 – 17 Mar
3-4 wk
7 Apr
1 wk before
10 Apr
1 wk before
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
24 Feb – 10 Mar
4-6 wk
7 Apr
1 wk before
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
6 – 20 Mar
2-4 wk
3 Apr
2 wk before
3 Apr
2 wk before
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
10 Apr
1 wk before
10 Apr
1 wk before
Spinach
Spinacia oleracea
27 Feb – 6 Mar
3-4 wk
27 Mar
3 wk before
27 Mar
3 wk before
Sweet potato
Ipomoea batatas
18 May – 1 Jun
4-6 wk
29 Jun
11 wk after
Tomato
Solanum lycopersicum
16 – 30 Apr
6-8 wk
11 Jun
8 wk after
Tomatillo
Physalis ixocarpa
French bean
Phaseolus vulgaris
14 – 28 May
2-4 wk
11 Jun
8 wk after
27 May
6 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
25 Mar – 8 Apr
4-6 wk
6 May
3 wk after
Pea
Pisum sativum
27 Feb – 6 Mar
3-4 wk
27 Mar
3 wk before
10 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
Fleece
20 Apr – 4 May
4-6 wk
1 Jun
7 wk after
Lemon balm
Melissa officinalis
5 – 19 Feb
8-10 wk
16 Apr
Vid frost
12 May
4 wk after
Dill
Anethum graveolens
10 Apr
1 wk before
Chives
Allium schoenoprasum
20 Jan – 3 Feb
6-8 wk
17 Mar
4 wk before
10 Apr
1 wk before
Spearmint
Mentha spicata
2 – 30 Jan
8-12 wk
27 Mar
3 wk before
12 May
4 wk after
Coriander
Coriandrum sativum
29 Apr
2 wk after
Sage
Salvia officinalis
9 – 23 Mar
8-10 wk
18 May
5 wk after
Thyme
Thymus vulgaris
25 Feb – 11 Mar
8-10 wk
6 May
3 wk after
Oregano
Origanum vulgare
28 Feb – 14 Mar
6-8 wk
25 Apr
1 wk after
12 May
4 wk after
Parsley
Petroselinum crispum
30 Jan – 13 Feb
6-8 wk
27 Mar
3 wk before
10 Apr
1 wk before
Rosemary
Salvia rosmarinus
9 Feb – 9 Mar
10-14 wk
18 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
14 – 21 May
3-4 wk
11 Jun
8 wk after
Cornflower
Centaurea cyanus
27 Mar
3 wk before
10 Apr
1 wk before
Statice
Limonium sinuatum
Fleece
18 Mar – 1 Apr
8-10 wk
27 May
6 wk after
Sweet William
Dianthus barbatus
30 Jan – 13 Feb
6-8 wk
27 Mar
3 wk before
21 Apr
1 wk after
Snow-on-the-mountain
Euphorbia marginata
Fleece
1 – 15 Apr
6-8 wk
27 May
6 wk after
1 Jun
7 wk after
Dahlia
Dahlia × pinnata
9 – 23 Apr
6-8 wk
4 Jun
7 wk after
Dahlia (tubers)
Dahlia × pinnata
17 Mar – 14 Apr
4-8 wk
12 May
4 wk after
12 May
4 wk after
Foxglove
Digitalis purpurea
16 – 30 Jan
8-10 wk
27 Mar
3 wk before
29 Apr
2 wk after
Busy lizzie
Impatiens walleriana
Fleece
19 Mar – 16 Apr
8-12 wk
11 Jun
8 wk after
Creeping zinnia
Sanvitalia procumbens
16 – 30 Apr
6-8 wk
11 Jun
8 wk after
Hyacinth bean
Dolichos lablab
Season too short
30 Apr – 14 May
4-6 wk
11 Jun
8 wk after
Chinese lantern
Physalis alkekengi
9 – 23 Mar
8-10 wk
18 May
5 wk after
Love in a mist
Nigella damascena
10 Apr
1 wk before
Strawflower
Xerochrysum bracteatum
Fleece
1 – 15 Apr
6-8 wk
27 May
6 wk after
1 Jun
7 wk after
Tall verbena
Verbena bonariensis
23 Feb – 23 Mar
8-12 wk
18 May
5 wk after
Cardoon
Cynara cardunculus
Greenhouse
17 Feb – 17 Mar
8-12 wk
12 May
4 wk after
Regal-foxtail
Ptilotus nobilis
Greenhouse
4 Mar – 1 Apr
8-12 wk
27 May
6 wk after
Globe amaranth
Gomphrena globosa
Greenhouse
1 – 15 Apr
6-8 wk
27 May
6 wk after
Corn poppy
Papaver rhoeas
10 Apr
1 wk before
Snapdragon
Antirrhinum majus
13 Jan – 10 Feb
8-12 wk
7 Apr
1 wk before
21 Apr
1 wk after
Flossflower
Ageratum houstonianum
Fleece
2 – 16 Apr
8-10 wk
11 Jun
8 wk after
Sweet pea
Lathyrus odoratus
30 Jan – 20 Feb
5-8 wk
27 Mar
3 wk before
Stock
Matthiola incana
10 – 24 Feb
6-8 wk
7 Apr
1 wk before
29 Apr
2 wk after
Wormwood
Artemisia absinthium
30 Jan – 13 Feb
6-8 wk
27 Mar
3 wk before
29 Apr
2 wk after
Mexican sunflower
Tithonia rotundifolia
Greenhouse
15 – 29 Apr
4-6 wk
27 May
6 wk after
Pansy
Viola × wittrockiana
6 – 20 Jan
8-10 wk
17 Mar
4 wk before
21 Apr
1 wk after
Petunia
Petunia
Fleece
4 Mar – 1 Apr
8-12 wk
27 May
6 wk after
Scabious
Scabiosa atropurpurea
23 Mar – 6 Apr
6-8 wk
18 May
5 wk after
27 May
6 wk after
Zinnia
Zinnia elegans
30 Apr – 14 May
4-6 wk
11 Jun
8 wk after
Common morning glory
Ipomoea purpurea
Fleece
7 – 21 May
3-5 wk
11 Jun
8 wk after
Cosmos
Cosmos bipinnatus
Fleece
15 – 29 Apr
4-6 wk
27 May
6 wk after
12 May
4 wk after
Scarlet milkweed
Asclepias curassavica
Greenhouse
19 Mar – 16 Apr
8-12 wk
11 Jun
8 wk after
Bee balm
Monarda didyma
22 Jan – 19 Feb
8-12 wk
16 Apr
Vid frost
12 May
4 wk after
Yarrow
Achillea millefolium
30 Jan – 13 Feb
6-8 wk
27 Mar
3 wk before
29 Apr
2 wk after
Safflower
Carthamus tinctorius
27 Mar
3 wk before
10 Apr
1 wk before
Iceland poppy
Papaver nudicaule
20 Jan – 3 Feb
6-8 wk
17 Mar
4 wk before
3 Apr
2 wk before
Bishop's flower
Ammi majus
20 Mar – 3 Apr
4-6 wk
1 May
2 wk after
29 Apr
2 wk after
Drumsticks
Pycnosorus globosus
Greenhouse
4 – 18 Mar
10-12 wk
27 May
6 wk after
Sunflower
Helianthus annuus
Fleece
29 Apr – 6 May
3-4 wk
27 May
6 wk after
29 Apr
2 wk after
China aster
Callistephus chinensis
Fleece
1 – 15 Apr
6-8 wk
27 May
6 wk after
12 May
4 wk after
Annual phlox
Phlox drummondii
1 – 15 Apr
6-8 wk
27 May
6 wk after
27 May
6 wk after
Hollyhock
Alcea rosea
30 Jan – 13 Feb
6-8 wk
27 Mar
3 wk before
29 Apr
2 wk after
Delphinium
Delphinium elatum
11 Feb – 11 Mar
8-12 wk
6 May
3 wk after
12 May
4 wk after
African marigold
Tagetes erecta
16 – 30 Apr
6-8 wk
11 Jun
8 wk after
Black-eyed Susan
Rudbeckia hirta
23 Mar – 6 Apr
6-8 wk
18 May
5 wk after
27 May
6 wk after
Woodland sage
Salvia nemorosa
14 – 28 Feb
8-10 wk
25 Apr
1 wk after
12 May
4 wk after
Black-eyed susan vine
Thunbergia alata
Fleece
2 – 30 Apr
6-10 wk
11 Jun
8 wk after
California goldenpoppy
Eschscholzia californica
10 Apr
1 wk before
Painted tongue
Salpiglossis sinuata
Fleece
18 Mar – 1 Apr
8-10 wk
27 May
6 wk after
Water forget-me-not
Myosotis scorpioides
30 Jan – 13 Feb
6-8 wk
27 Mar
3 wk before
29 Apr
2 wk after
Current date Soon Date passed