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Rel. frost
Last spring frost (0°C) 16 Mar Normal year · 20 years of data
Frost-free season 257 days 16 Mar – 28 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
26 Jan – 9 Feb
16 Jun
5-7 wk
16 Mar
21 Jul
0 wk
4 Mar
11 Jul
2 wk before
Broccoli
Brassica oleracea (Italica-gruppen)
Season too short
2 – 16 Feb
28 Jun
4-6 wk
16 Mar
26 Jul
0 wk
4 Mar
16 Jul
2 wk before
Chili pepper
Capsicum annuum
Fleece
29 Jan – 26 Feb
14 Apr
8-12 wk
23 Apr
9 Jun
5 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
Season too short
26 Jan – 9 Feb
11 Jun
5-7 wk
16 Mar
16 Jul
0 wk
26 Feb
6 Jul
3 wk before
Garden cucumber
Cucumis sativus
7 – 14 Apr
8 Jun
3-4 wk
5 May
29 Jun
7 wk after
Florence Fennel
Foeniculum vulgare
31 Mar – 7 Apr
8 Jun
4-5 wk
5 May
6 Jul
7 wk after
4 May
26 Jun
7 wk after
Butter bean
Phaseolus lunatus
Greenhouse
17 – 24 Apr
5 Jun
3-4 wk
15 May
26 Jun
9 wk after
Onion
Allium cepa (Cepa-gruppen)
Season too short
22 Dec – 19 Jan
1 Apr
8-12 wk
16 Mar
27 May
0 wk
16 Mar
17 May
0 wk
Onion (sets)
Allium cepa (Cepa-gruppen)
Season too short
4 Mar
16 Jun
2 wk before
4 Mar
6 Jun
2 wk before
Maize
Zea mays
26 Mar – 2 Apr
29 May
3-4 wk
23 Apr
19 Jun
5 wk after
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
Season too short
16 – 23 Feb
5 Jul
3-4 wk
16 Mar
26 Jul
0 wk
16 Mar
16 Jul
0 wk
Carrot
Daucus carota subsp. sativus var. sativus
16 Mar
6 Jul
0 wk
16 Mar
26 Jun
0 wk
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
Season too short
26 Jan – 9 Feb
11 Jun
5-7 wk
16 Mar
16 Jul
0 wk
26 Feb
6 Jul
3 wk before
Potato
Solanum tuberosum
Season too short
29 Jan – 12 Feb
8 Jun
4-6 wk
12 Mar
6 Jul
1 wk before
12 Mar
26 Jun
1 wk before
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
Season too short
26 Jan – 9 Feb
21 Jun
5-7 wk
16 Mar
26 Jul
0 wk
4 Mar
16 Jul
2 wk before
Pumpkin
Cucurbita pepo
7 – 14 Apr
9 Jul
3-4 wk
5 May
30 Jul
7 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
Season too short
16 – 23 Feb
5 Jul
3-4 wk
16 Mar
26 Jul
0 wk
16 Mar
16 Jul
0 wk
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
Season too short
2 – 16 Feb
23 Jun
4-6 wk
16 Mar
21 Jul
0 wk
Lettuce
Lactuca sativa
Season too short
16 – 23 Feb
10 Jul
3-4 wk
16 Mar
31 Jul
0 wk
4 Mar
21 Jul
2 wk before
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
Season too short
2 – 16 Feb
23 Jun
4-6 wk
16 Mar
21 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
Season too short
29 Jan – 12 Feb
2 Jun
2-4 wk
26 Feb
16 Jun
3 wk before
26 Feb
6 Jun
3 wk before
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
Season too short
4 Mar
16 Jun
2 wk before
4 Mar
6 Jun
2 wk before
Spinach
Spinacia oleracea
Season too short
16 – 23 Feb
25 Jul
3-4 wk
16 Mar
15 Aug
0 wk
8 Feb
5 Aug
5 wk before
Sweet potato
Ipomoea batatas
17 Apr – 1 May
4-6 wk
29 May
11 wk after
Garden tomato
Solanum lycopersicum
26 Feb – 12 Mar
8 May
6-8 wk
23 Apr
19 Jun
5 wk after
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
26 Mar – 9 Apr
11 Jul
2-4 wk
23 Apr
25 Jul
5 wk after
4 May
15 Jul
7 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
Season too short
2 – 16 Feb
23 Jun
4-6 wk
16 Mar
21 Jul
0 wk
Garden pea
Pisum sativum
Season too short
16 – 23 Feb
25 Jun
3-4 wk
16 Mar
16 Jul
0 wk
4 Mar
6 Jul
2 wk before

Herbs

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