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Rel. frost
Last spring frost (0°C) 30 Mar Normal year · 20 years of data
Frost-free season 236 days 30 Mar – 21 Nov

Vegetables

Plant Sow indoors Transplant Direct sow
Earliest Latest Growing time Earliest Latest Rel. frost Earliest Latest Rel. frost
Cauliflower
Brassica oleracea (Botrytis-gruppen)
Season too short
9 – 23 Feb
12 Jun
5-7 wk
30 Mar
17 Jul
0 wk
21 Mar
7 Jul
1 wk before
Broccoli
Brassica oleracea (Italica-gruppen)
Season too short
16 Feb – 2 Mar
24 Jun
4-6 wk
30 Mar
22 Jul
0 wk
21 Mar
12 Jul
1 wk before
Chili pepper
Capsicum annuum
Greenhouse
29 Jan – 26 Feb
1 May
8-12 wk
23 Apr
26 Jun
3 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
Season too short
9 – 23 Feb
7 Jun
5-7 wk
30 Mar
12 Jul
0 wk
14 Mar
2 Jul
2 wk before
Garden cucumber
Cucumis sativus
Fleece
9 – 16 Apr
25 Jun
3-4 wk
7 May
16 Jul
5 wk after
Florence Fennel
Foeniculum vulgare
14 – 21 Apr
4 Jun
4-5 wk
19 May
2 Jul
7 wk after
12 May
22 Jun
6 wk after
Butter bean
Phaseolus lunatus
Greenhouse
1 – 8 May
1 Jun
3-4 wk
29 May
22 Jun
9 wk after
Onion
Allium cepa (Cepa-gruppen)
Season too short
5 Jan – 2 Feb
28 Mar
8-12 wk
30 Mar
23 May
0 wk
30 Mar
13 May
0 wk
Onion (sets)
Allium cepa (Cepa-gruppen)
Season too short
21 Mar
12 Jun
1 wk before
21 Mar
2 Jun
1 wk before
Maize
Zea mays
Fleece
26 Mar – 2 Apr
15 Jun
3-4 wk
23 Apr
6 Jul
3 wk after
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
4 – 11 Mar
1 Jul
3-4 wk
1 Apr
22 Jul
0 wk
12 Apr
12 Jul
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
30 Mar
2 Jul
0 wk
30 Mar
22 Jun
0 wk
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
Season too short
9 – 23 Feb
7 Jun
5-7 wk
30 Mar
12 Jul
0 wk
14 Mar
2 Jul
2 wk before
Potato
Solanum tuberosum
Season too short
13 – 27 Feb
4 Jun
4-6 wk
27 Mar
2 Jul
0 wk
27 Mar
22 Jun
0 wk
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
Season too short
9 – 23 Feb
17 Jun
5-7 wk
30 Mar
22 Jul
0 wk
21 Mar
12 Jul
1 wk before
Pumpkin
Cucurbita pepo
21 – 28 Apr
30 Jun
3-4 wk
19 May
21 Jul
7 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
Season too short
2 – 9 Mar
1 Jul
3-4 wk
30 Mar
22 Jul
0 wk
30 Mar
12 Jul
0 wk
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
Season too short
16 Feb – 2 Mar
19 Jun
4-6 wk
30 Mar
17 Jul
0 wk
Lettuce
Lactuca sativa
Season too short
2 – 9 Mar
6 Jul
3-4 wk
30 Mar
27 Jul
0 wk
21 Mar
17 Jul
1 wk before
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
Season too short
16 Feb – 2 Mar
19 Jun
4-6 wk
30 Mar
17 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
Season too short
14 – 28 Feb
29 May
2-4 wk
14 Mar
12 Jun
2 wk before
14 Mar
2 Jun
2 wk before
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
Season too short
21 Mar
12 Jun
1 wk before
21 Mar
2 Jun
1 wk before
Spinach
Spinacia oleracea
Season too short
2 – 9 Mar
21 Jul
3-4 wk
30 Mar
11 Aug
0 wk
29 Jan
1 Aug
9 wk before
Sweet potato
Ipomoea batatas
24 Apr – 8 May
4-6 wk
5 Jun
10 wk after
Garden tomato
Solanum lycopersicum
Fleece
26 Feb – 12 Mar
25 May
6-8 wk
23 Apr
6 Jul
3 wk after
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
9 – 23 Apr
2 Jul
2-4 wk
7 May
16 Jul
5 wk after
12 May
6 Jul
6 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
Season too short
16 Feb – 2 Mar
19 Jun
4-6 wk
30 Mar
17 Jul
0 wk
Garden pea
Pisum sativum
Season too short
2 – 9 Mar
21 Jun
3-4 wk
30 Mar
12 Jul
0 wk
21 Mar
2 Jul
1 wk before

Herbs

Plant Sow indoors Transplant Direct sow
Earliest Latest Growing time Earliest Latest Rel. frost Earliest Latest Rel. frost
Basil
Ocimum basilicum
7 – 21 Apr
8 Jun
4-6 wk
19 May
6 Jul
7 wk after
Lemon balm
Melissa officinalis
Season too short
19 Jan – 2 Feb
17 May
8-10 wk
30 Mar
12 Jul
0 wk
5 Apr
2 Jul
1 wk after
Dill
Anethum graveolens
31 Mar
22 Jul
0 wk
Wild chives
Allium schoenoprasum
Season too short
2 – 16 Feb
31 May
6-8 wk
30 Mar
12 Jul
0 wk
21 Mar
2 Jul
1 wk before
Spearmint
Mentha spicata
Season too short
5 Jan – 2 Feb
17 May
8-12 wk
30 Mar
12 Jul
0 wk
5 Apr
2 Jul
1 wk after
Coriander
Coriandrum sativum
30 Mar
11 Aug
0 wk
12 Apr
1 Aug
2 wk after
Garden sage
Salvia officinalis
Season too short
19 Jan – 2 Feb
2 May
8-10 wk
30 Mar
27 Jun
0 wk
Common thyme
Thymus vulgaris
Season too short
19 Jan – 2 Feb
7 May
8-10 wk
30 Mar
2 Jul
0 wk
Oregano
Origanum vulgare
Season too short
2 – 16 Feb
21 May
6-8 wk
30 Mar
2 Jul
0 wk
5 Apr
22 Jun
1 wk after
Parsley
Petroselinum crispum
Season too short
2 – 16 Feb
21 May
6-8 wk
30 Mar
2 Jul
0 wk
21 Mar
22 Jun
1 wk before
Rosemary
Salvia rosmarinus
24 Dec – 21 Jan
3 Apr
10-14 wk
1 Apr
12 Jun
0 wk

Annual flowers

Plant Sow indoors Transplant Direct sow
Earliest Latest Growing time Earliest Latest Rel. frost Earliest Latest Rel. frost
Morning glory
Ipomoea tricolor
21 – 28 Apr
15 Jun
3-4 wk
19 May
6 Jul
7 wk after
Cornflower
Centaurea cyanus
Season too short
30 Mar
12 Jul
0 wk
21 Mar
2 Jul
1 wk before
Statice
Limonium sinuatum
26 Feb – 12 Mar
7 May
8-10 wk
7 May
2 Jul
5 wk after
Sweet William
Dianthus barbatus
2 – 16 Feb
6-8 wk
30 Mar
0 wk
9 Apr
1 wk after
Snow-on-the-mountain
Euphorbia marginata
12 – 26 Mar
21 May
6-8 wk
7 May
2 Jul
5 wk after
5 Jun
22 Jun
10 wk after
Pinnate dahlia
Dahlia × pinnata
5 – 19 Mar
21 May
6-8 wk
30 Apr
2 Jul
4 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
Season too short
8 Feb – 8 Mar
4 Jun
4-8 wk
5 Apr
2 Jul
1 wk after
5 Apr
22 Jun
1 wk after
Foxglove
Digitalis purpurea
19 Jan – 2 Feb
8-10 wk
30 Mar
0 wk
12 Apr
2 wk after
Busy lizzie
Impatiens walleriana
24 Feb – 24 Mar
2 Jul
8-12 wk
19 May
27 Aug
7 wk after
Creeping zinnia
Sanvitalia procumbens
12 – 26 Mar
31 May
6-8 wk
7 May
12 Jul
5 wk after
Hyacinth bean
Dolichos lablab
Greenhouse
26 Mar – 9 Apr
15 May
4-6 wk
7 May
12 Jun
5 wk after
Chinese lantern
Physalis alkekengi
21 Jan – 4 Feb
17 Apr
8-10 wk
1 Apr
12 Jun
0 wk
Love in a mist
Nigella damascena
30 Mar
27 Jun
0 wk
31 Mar
17 Jun
0 wk
Strawflower
Xerochrysum bracteatum
12 – 26 Mar
11 May
6-8 wk
7 May
22 Jun
5 wk after
5 Jun
12 Jun
10 wk after
Purple-top vervain
Verbena bonariensis
7 Jan – 4 Feb
17 Apr
8-12 wk
1 Apr
12 Jun
0 wk
Cardoon
Cynara cardunculus
12 Feb – 12 Mar
18 Mar
8-12 wk
7 May
13 May
5 wk after
Regal-foxtail
Ptilotus nobilis
24 Feb – 24 Mar
1 May
8-12 wk
19 May
26 Jun
7 wk after
Globe amaranth
Gomphrena globosa
24 Mar – 7 Apr
15 May
6-8 wk
19 May
26 Jun
7 wk after
Corn poppy
Papaver rhoeas
30 Mar
12 Jul
0 wk
31 Mar
2 Jul
0 wk
Snapdragon
Antirrhinum majus
Season too short
5 Jan – 2 Feb
7 May
8-12 wk
30 Mar
2 Jul
0 wk
27 Mar
22 Jun
0 wk
Flossflower
Ageratum houstonianum
10 – 24 Mar
17 May
8-10 wk
19 May
12 Jul
7 wk after
Sweet pea
Lathyrus odoratus
Season too short
2 – 23 Feb
28 May
5-8 wk
30 Mar
2 Jul
0 wk
Stock
Matthiola incana
Season too short
2 – 16 Feb
31 May
6-8 wk
30 Mar
12 Jul
0 wk
30 Mar
2 Jul
0 wk
Wormwood
Artemisia absinthium
Season too short
2 – 16 Feb
1 May
6-8 wk
30 Mar
12 Jun
0 wk
30 Mar
2 Jun
0 wk
Mexican sunflower
Tithonia rotundifolia
Fleece
26 Mar – 9 Apr
30 May
4-6 wk
7 May
27 Jun
5 wk after
Garden pansy
Viola × wittrockiana
Season too short
19 Jan – 2 Feb
17 May
8-10 wk
30 Mar
12 Jul
0 wk
27 Mar
2 Jul
0 wk
Petunia
Petunia
12 Feb – 12 Mar
7 May
8-12 wk
7 May
2 Jul
5 wk after
Sweet Scabious
Scabiosa atropurpurea
4 – 18 Feb
1 May
6-8 wk
1 Apr
12 Jun
0 wk
12 May
2 Jun
6 wk after
Common zinnia
Zinnia elegans
26 Mar – 9 Apr
14 Jun
4-6 wk
7 May
12 Jul
5 wk after
Common morning glory
Ipomoea purpurea
14 – 28 Apr
15 Jun
3-5 wk
19 May
6 Jul
7 wk after
Garden cosmos
Cosmos bipinnatus
26 Mar – 9 Apr
4 Jun
4-6 wk
7 May
2 Jul
5 wk after
12 May
22 Jun
6 wk after
Scarlet milkweed
Asclepias curassavica
16 Mar – 13 Apr
31 May
8-12 wk
8 Jun
26 Jul
10 wk after
Bee balm
Monarda didyma
Season too short
5 Jan – 2 Feb
17 Apr
8-12 wk
30 Mar
12 Jun
0 wk
5 Apr
2 Jun
1 wk after
Yarrow
Achillea millefolium
Season too short
2 – 16 Feb
1 Apr
6-8 wk
30 Mar
13 May
0 wk
30 Mar
3 May
0 wk
Safflower
Carthamus tinctorius
Season too short
30 Mar
12 Jun
0 wk
21 Mar
2 Jun
1 wk before
Iceland poppy
Papaver nudicaule
Season too short
2 – 16 Feb
21 May
6-8 wk
30 Mar
2 Jul
0 wk
14 Mar
22 Jun
2 wk before
Bishop's flower
Ammi majus
Season too short
16 Feb – 2 Mar
4 Jun
4-6 wk
30 Mar
2 Jul
0 wk
30 Mar
22 Jun
0 wk
Drumsticks
Pycnosorus globosus
Fleece
12 – 26 Feb
3 Apr
10-12 wk
7 May
12 Jun
5 wk after
Sunflower
Helianthus annuus
9 – 16 Apr
11 Jun
3-4 wk
7 May
2 Jul
5 wk after
24 Apr
22 Jun
4 wk after
China aster
Callistephus chinensis
12 – 26 Mar
31 May
6-8 wk
7 May
12 Jul
5 wk after
12 May
2 Jul
6 wk after
Annual phlox
Phlox drummondii
26 Feb – 12 Mar
31 May
6-8 wk
23 Apr
12 Jul
3 wk after
12 May
2 Jul
6 wk after
Hollyhock
Alcea rosea
2 – 16 Feb
6-8 wk
30 Mar
0 wk
12 Apr
2 wk after
Alpine delphinium
Delphinium elatum
Season too short
5 Jan – 2 Feb
17 Apr
8-12 wk
30 Mar
12 Jun
0 wk
5 Apr
2 Jun
1 wk after
African marigold
Tagetes erecta
12 – 26 Mar
31 May
6-8 wk
7 May
12 Jul
5 wk after
Black-eyed Susan
Rudbeckia hirta
4 – 18 Feb
21 May
6-8 wk
1 Apr
2 Jul
0 wk
12 May
22 Jun
6 wk after
Wood sage
Salvia nemorosa
Season too short
19 Jan – 2 Feb
7 Apr
8-10 wk
30 Mar
2 Jun
0 wk
5 Apr
23 May
1 wk after
Black-eyed susan vine
Thunbergia alata
10 Mar – 7 Apr
25 May
6-10 wk
19 May
6 Jul
7 wk after
California goldenpoppy
Eschscholzia californica
30 Mar
12 Jul
0 wk
31 Mar
2 Jul
0 wk
Painted tongue
Salpiglossis sinuata
26 Feb – 12 Mar
7 May
8-10 wk
7 May
2 Jul
5 wk after
Water forget-me-not
Myosotis scorpioides
Season too short
2 – 16 Feb
1 May
6-8 wk
30 Mar
12 Jun
0 wk
30 Mar
2 Jun
0 wk