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Rel. frost
Last spring frost (0°C) 2 May Normal year · 20 years of data
Frost-free season 176 days 2 May – 25 Oct

Vegetables

Plant Sow indoors Transplant Direct sow
Earliest Latest Growing time Earliest Latest Rel. frost Earliest Latest Rel. frost
Cauliflower
Brassica oleracea (Botrytis-gruppen)
14 – 28 Mar
16 Jun
5-7 wk
2 May
21 Jul
0 wk
6 May
11 Jul
1 wk after
Broccoli
Brassica oleracea (Italica-gruppen)
21 Mar – 4 Apr
28 Jun
4-6 wk
2 May
26 Jul
0 wk
6 May
16 Jul
1 wk after
Chili pepper
Capsicum annuum
Fleece
1 – 29 Mar
18 Apr
8-12 wk
24 May
13 Jun
3 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
14 – 28 Mar
11 Jun
5-7 wk
2 May
16 Jul
0 wk
2 May
6 Jul
0 wk
Garden cucumber
Cucumis sativus
10 – 17 May
12 Jun
3-4 wk
7 Jun
3 Jul
5 wk after
Florence Fennel
Foeniculum vulgare
3 – 10 May
8 Jun
4-5 wk
7 Jun
6 Jul
5 wk after
20 Jun
26 Jun
7 wk after
Butter bean
Phaseolus lunatus
Fleece
5 – 12 Jun
3-4 wk
3 Jul
9 wk after
Onion
Allium cepa (Cepa-gruppen)
7 Feb – 7 Mar
1 Apr
8-12 wk
2 May
27 May
0 wk
23 May
3 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
6 May
16 Jun
1 wk after
6 May
6 Jun
1 wk after
Maize
Zea mays
26 Apr – 3 May
2 Jun
3-4 wk
24 May
23 Jun
3 wk after
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
11 – 18 Apr
5 Jul
3-4 wk
9 May
26 Jul
1 wk after
23 May
16 Jul
3 wk after
Carrot
Daucus carota subsp. sativus var. sativus
2 May
6 Jul
0 wk
2 May
26 Jun
0 wk
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
14 – 28 Mar
11 Jun
5-7 wk
2 May
16 Jul
0 wk
2 May
6 Jul
0 wk
Potato
Solanum tuberosum
6 – 20 Apr
8 Jun
4-6 wk
18 May
6 Jul
2 wk after
18 May
26 Jun
2 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
14 – 28 Mar
21 Jun
5-7 wk
2 May
26 Jul
0 wk
6 May
16 Jul
1 wk after
Pumpkin
Cucurbita pepo
10 – 17 May
29 Jun
3-4 wk
7 Jun
20 Jul
5 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
11 – 18 Apr
16 Jun
3-4 wk
9 May
7 Jul
1 wk after
23 May
27 Jun
3 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
21 Mar – 4 Apr
23 Jun
4-6 wk
2 May
21 Jul
0 wk
Lettuce
Lactuca sativa
4 – 11 Apr
10 Jul
3-4 wk
2 May
31 Jul
0 wk
6 May
21 Jul
1 wk after
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
21 Mar – 4 Apr
23 Jun
4-6 wk
2 May
21 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
4 – 18 Apr
2 Jun
2-4 wk
2 May
16 Jun
0 wk
2 May
6 Jun
0 wk
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
6 May
16 Jun
1 wk after
6 May
6 Jun
1 wk after
Spinach
Spinacia oleracea
4 – 11 Apr
25 Jul
3-4 wk
2 May
15 Aug
0 wk
28 Apr
5 Aug
1 wk before
Sweet potato
Ipomoea batatas
3 – 17 Jun
4-6 wk
15 Jul
11 wk after
Garden tomato
Solanum lycopersicum
29 Mar – 12 Apr
12 May
6-8 wk
24 May
23 Jun
3 wk after
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
26 Apr – 10 May
1 Jul
2-4 wk
24 May
15 Jul
3 wk after
20 Jun
5 Jul
7 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
21 Mar – 4 Apr
23 Jun
4-6 wk
2 May
21 Jul
0 wk
Garden pea
Pisum sativum
4 – 11 Apr
25 Jun
3-4 wk
2 May
16 Jul
0 wk
6 May
6 Jul
1 wk after

Herbs

Plant Sow indoors Transplant Direct sow
Earliest Latest Growing time Earliest Latest Rel. frost Earliest Latest Rel. frost
Basil
Ocimum basilicum
26 Apr – 10 May
7 Jun
4-6 wk
7 Jun
5 Jul
5 wk after
Lemon balm
Melissa officinalis
21 Feb – 7 Mar
21 May
8-10 wk
2 May
16 Jul
0 wk
6 Jun
6 Jul
5 wk after
Dill
Anethum graveolens
6 May
26 Jul
1 wk after
Wild chives
Allium schoenoprasum
7 – 21 Mar
4 Jun
6-8 wk
2 May
16 Jul
0 wk
6 May
6 Jul
1 wk after
Spearmint
Mentha spicata
7 Feb – 7 Mar
21 May
8-12 wk
2 May
16 Jul
0 wk
6 Jun
6 Jul
5 wk after
Coriander
Coriandrum sativum
2 May
15 Aug
0 wk
23 May
5 Aug
3 wk after
Garden sage
Salvia officinalis
28 Feb – 14 Mar
6 May
8-10 wk
9 May
1 Jul
1 wk after
Common thyme
Thymus vulgaris
21 Feb – 7 Mar
11 May
8-10 wk
2 May
6 Jul
0 wk
Oregano
Origanum vulgare
7 – 21 Mar
25 May
6-8 wk
2 May
6 Jul
0 wk
6 Jun
26 Jun
5 wk after
Parsley
Petroselinum crispum
7 – 21 Mar
25 May
6-8 wk
2 May
6 Jul
0 wk
6 May
26 Jun
1 wk after
Rosemary
Salvia rosmarinus
31 Jan – 28 Feb
7 Apr
10-14 wk
9 May
16 Jun
1 wk after

Annual flowers

Plant Sow indoors Transplant Direct sow
Earliest Latest Growing time Earliest Latest Rel. frost Earliest Latest Rel. frost
Morning glory
Ipomoea tricolor
10 – 17 May
14 Jun
3-4 wk
7 Jun
5 Jul
5 wk after
Cornflower
Centaurea cyanus
2 May
16 Jul
0 wk
6 May
6 Jul
1 wk after
Statice
Limonium sinuatum
15 – 29 Mar
11 May
8-10 wk
24 May
6 Jul
3 wk after
Sweet William
Dianthus barbatus
7 – 21 Mar
6-8 wk
2 May
0 wk
18 May
2 wk after
Snow-on-the-mountain
Euphorbia marginata
29 Mar – 12 Apr
25 May
6-8 wk
24 May
6 Jul
3 wk after
15 Jul
11 wk after
Pinnate dahlia
Dahlia × pinnata
22 Mar – 5 Apr
25 May
6-8 wk
17 May
6 Jul
2 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
11 Apr – 9 May
8 Jun
4-8 wk
6 Jun
6 Jul
5 wk after
6 Jun
26 Jun
5 wk after
Foxglove
Digitalis purpurea
21 Feb – 7 Mar
8-10 wk
2 May
0 wk
23 May
3 wk after
Busy lizzie
Impatiens walleriana
15 Mar – 12 Apr
4 Jul
8-12 wk
7 Jun
29 Aug
5 wk after
Creeping zinnia
Sanvitalia procumbens
29 Mar – 12 Apr
4 Jun
6-8 wk
24 May
16 Jul
3 wk after
Hyacinth bean
Dolichos lablab
Fleece
26 Apr – 10 May
8 May
4-6 wk
7 Jun
5 wk after
Chinese lantern
Physalis alkekengi
28 Feb – 14 Mar
21 Apr
8-10 wk
9 May
16 Jun
1 wk after
Love in a mist
Nigella damascena
2 May
1 Jul
0 wk
6 May
21 Jun
1 wk after
Strawflower
Xerochrysum bracteatum
29 Mar – 12 Apr
15 May
6-8 wk
24 May
26 Jun
3 wk after
15 Jul
11 wk after
Purple-top vervain
Verbena bonariensis
14 Feb – 14 Mar
21 Apr
8-12 wk
9 May
16 Jun
1 wk after
Cardoon
Cynara cardunculus
1 – 29 Mar
22 Mar
8-12 wk
24 May
3 wk after
Regal-foxtail
Ptilotus nobilis
15 Mar – 12 Apr
30 Apr
8-12 wk
7 Jun
25 Jun
5 wk after
Globe amaranth
Gomphrena globosa
12 – 26 Apr
14 May
6-8 wk
7 Jun
25 Jun
5 wk after
Corn poppy
Papaver rhoeas
2 May
16 Jul
0 wk
6 May
6 Jul
1 wk after
Snapdragon
Antirrhinum majus
7 Feb – 7 Mar
11 May
8-12 wk
2 May
6 Jul
0 wk
18 May
26 Jun
2 wk after
Flossflower
Ageratum houstonianum
29 Mar – 12 Apr
21 May
8-10 wk
7 Jun
16 Jul
5 wk after
Sweet pea
Lathyrus odoratus
7 – 28 Mar
1 Jun
5-8 wk
2 May
6 Jul
0 wk
Stock
Matthiola incana
7 – 21 Mar
4 Jun
6-8 wk
2 May
16 Jul
0 wk
23 May
6 Jul
3 wk after
Wormwood
Artemisia absinthium
7 – 21 Mar
5 May
6-8 wk
2 May
16 Jun
0 wk
23 May
6 Jun
3 wk after
Mexican sunflower
Tithonia rotundifolia
26 Apr – 10 May
23 May
4-6 wk
7 Jun
20 Jun
5 wk after
Garden pansy
Viola × wittrockiana
21 Feb – 7 Mar
21 May
8-10 wk
2 May
16 Jul
0 wk
18 May
6 Jul
2 wk after
Petunia
Petunia
1 – 29 Mar
11 May
8-12 wk
24 May
6 Jul
3 wk after
Sweet Scabious
Scabiosa atropurpurea
14 – 28 Mar
5 May
6-8 wk
9 May
16 Jun
1 wk after
20 Jun
7 wk after
Common zinnia
Zinnia elegans
12 – 26 Apr
16 Jun
4-6 wk
24 May
14 Jul
3 wk after
Common morning glory
Ipomoea purpurea
3 – 17 May
14 Jun
3-5 wk
7 Jun
5 Jul
5 wk after
Garden cosmos
Cosmos bipinnatus
12 – 26 Apr
8 Jun
4-6 wk
24 May
6 Jul
3 wk after
20 Jun
26 Jun
7 wk after
Scarlet milkweed
Asclepias curassavica
1 – 29 Apr
30 May
8-12 wk
24 Jun
25 Jul
8 wk after
Bee balm
Monarda didyma
7 Feb – 7 Mar
21 Apr
8-12 wk
2 May
16 Jun
0 wk
6 Jun
6 Jun
5 wk after
Yarrow
Achillea millefolium
7 – 21 Mar
5 Apr
6-8 wk
2 May
17 May
0 wk
23 May
3 wk after
Safflower
Carthamus tinctorius
2 May
16 Jun
0 wk
6 May
6 Jun
1 wk after
Iceland poppy
Papaver nudicaule
Season too short
7 – 21 Mar
25 May
6-8 wk
2 May
6 Jul
0 wk
14 Apr
26 Jun
3 wk before
Bishop's flower
Ammi majus
21 Mar – 4 Apr
8 Jun
4-6 wk
2 May
6 Jul
0 wk
23 May
26 Jun
3 wk after
Drumsticks
Pycnosorus globosus
15 – 29 Mar
5 Apr
10-12 wk
7 Jun
14 Jun
5 wk after
Sunflower
Helianthus annuus
26 Apr – 3 May
15 Jun
3-4 wk
24 May
6 Jul
3 wk after
6 Jun
26 Jun
5 wk after
China aster
Callistephus chinensis
29 Mar – 12 Apr
4 Jun
6-8 wk
24 May
16 Jul
3 wk after
20 Jun
6 Jul
7 wk after
Annual phlox
Phlox drummondii
20 Mar – 3 Apr
4 Jun
6-8 wk
15 May
16 Jul
2 wk after
20 Jun
6 Jul
7 wk after
Hollyhock
Alcea rosea
7 – 21 Mar
6-8 wk
2 May
0 wk
23 May
3 wk after
Alpine delphinium
Delphinium elatum
7 Feb – 7 Mar
21 Apr
8-12 wk
2 May
16 Jun
0 wk
6 Jun
6 Jun
5 wk after
African marigold
Tagetes erecta
29 Mar – 12 Apr
4 Jun
6-8 wk
24 May
16 Jul
3 wk after
Black-eyed Susan
Rudbeckia hirta
14 – 28 Mar
25 May
6-8 wk
9 May
6 Jul
1 wk after
20 Jun
26 Jun
7 wk after
Wood sage
Salvia nemorosa
21 Feb – 7 Mar
11 Apr
8-10 wk
2 May
6 Jun
0 wk
6 Jun
5 wk after
Black-eyed susan vine
Thunbergia alata
29 Mar – 26 Apr
24 May
6-10 wk
7 Jun
5 Jul
5 wk after
California goldenpoppy
Eschscholzia californica
2 May
16 Jul
0 wk
6 May
6 Jul
1 wk after
Painted tongue
Salpiglossis sinuata
15 – 29 Mar
11 May
8-10 wk
24 May
6 Jul
3 wk after
Water forget-me-not
Myosotis scorpioides
7 – 21 Mar
5 May
6-8 wk
2 May
16 Jun
0 wk
23 May
6 Jun
3 wk after