Create your calendar
Method
Rel. frost
Last spring frost (0°C) 4 May Frost 9 of 10 years · 20 years of data
Frost-free season 139 days 4 May – 20 Sep
Probability that frost is over

10% = Half of years are frost-free by this date. More about frost & season →

Custom date
Note: This location has a shorter growing season. Plants marked with Fleece, Greenhouse or Season too short need extra protection or are difficult to grow here.

Vegetables

Plant Sow indoors Transplant Direct sow
Earliest Latest Growing time Earliest Latest Rel. frost Earliest Latest Rel. frost
Cauliflower
Brassica oleracea (Botrytis-gruppen)
16 – 30 Mar
12 Jun
5-7 wk
4 May
17 Jul
0 wk
5 May
7 Jul
0 wk
Broccoli
Brassica oleracea (Italica-gruppen)
23 Mar – 6 Apr
24 Jun
4-6 wk
4 May
22 Jul
0 wk
5 May
12 Jul
0 wk
Chili pepper
Capsicum annuum
Season too short
20 Feb – 20 Mar
8-12 wk
15 May
2 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
16 – 30 Mar
7 Jun
5-7 wk
4 May
12 Jul
0 wk
4 May
2 Jul
0 wk
Garden cucumber
Cucumis sativus
Season too short
17 – 24 Apr
3-4 wk
15 May
2 wk after
Florence Fennel
Foeniculum vulgare
3 – 10 May
22 May
4-5 wk
7 Jun
19 Jun
5 wk after
16 Jun
6 wk after
Butter bean
Phaseolus lunatus
Season too short
17 – 24 May
3-4 wk
14 Jun
6 wk after
Onion
Allium cepa (Cepa-gruppen)
9 Feb – 9 Mar
17 Mar
8-12 wk
4 May
12 May
0 wk
17 May
2 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
5 May
1 Jun
0 wk
5 May
22 May
0 wk
Maize
Zea mays
Season too short
10 – 17 Apr
3-4 wk
8 May
1 wk after
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
12 – 19 Apr
1 Jul
3-4 wk
10 May
22 Jul
1 wk after
17 May
12 Jul
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
4 May
2 Jul
0 wk
4 May
22 Jun
0 wk
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
16 – 30 Mar
7 Jun
5-7 wk
4 May
12 Jul
0 wk
4 May
2 Jul
0 wk
Potato
Solanum tuberosum
2 – 16 Apr
12 May
4-6 wk
14 May
9 Jun
1 wk after
14 May
30 May
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
16 – 30 Mar
17 Jun
5-7 wk
4 May
22 Jul
0 wk
5 May
12 Jul
0 wk
Pumpkin
Cucurbita pepo
Greenhouse
17 – 24 Apr
19 May
3-4 wk
15 May
9 Jun
2 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
12 – 19 Apr
18 May
3-4 wk
10 May
8 Jun
1 wk after
17 May
29 May
2 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
23 Mar – 6 Apr
19 Jun
4-6 wk
4 May
17 Jul
0 wk
Lettuce
Lactuca sativa
6 – 13 Apr
6 Jul
3-4 wk
4 May
27 Jul
0 wk
5 May
17 Jul
0 wk
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
23 Mar – 6 Apr
19 Jun
4-6 wk
4 May
17 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
6 – 20 Apr
21 May
2-4 wk
4 May
4 Jun
0 wk
4 May
25 May
0 wk
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
5 May
1 Jun
0 wk
5 May
22 May
0 wk
Spinach
Spinacia oleracea
6 – 13 Apr
21 Jul
3-4 wk
4 May
11 Aug
0 wk
1 May
1 Aug
0 wk
Sweet potato
Ipomoea batatas
29 May – 12 Jun
4-6 wk
10 Jul
10 wk after
Garden tomato
Solanum lycopersicum
Season too short
13 – 27 Mar
14 Mar
6-8 wk
8 May
1 wk after
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
Greenhouse
10 – 24 Apr
21 May
2-4 wk
8 May
4 Jun
1 wk after
17 May
25 May
2 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
23 Mar – 6 Apr
19 Jun
4-6 wk
4 May
17 Jul
0 wk
Garden pea
Pisum sativum
6 – 13 Apr
21 Jun
3-4 wk
4 May
12 Jul
0 wk
5 May
2 Jul
0 wk

Herbs

Plant Sow indoors Transplant Direct sow
Earliest Latest Growing time Earliest Latest Rel. frost Earliest Latest Rel. frost
Basil
Ocimum basilicum
Greenhouse
3 – 17 Apr
27 Apr
4-6 wk
15 May
25 May
2 wk after
Lemon balm
Melissa officinalis
23 Feb – 9 Mar
17 May
8-10 wk
4 May
12 Jul
0 wk
29 May
2 Jul
4 wk after
Dill
Anethum graveolens
5 May
22 Jul
0 wk
Wild chives
Allium schoenoprasum
9 – 23 Mar
31 May
6-8 wk
4 May
12 Jul
0 wk
5 May
2 Jul
0 wk
Spearmint
Mentha spicata
9 Feb – 9 Mar
17 May
8-12 wk
4 May
12 Jul
0 wk
29 May
2 Jul
4 wk after
Coriander
Coriandrum sativum
4 May
11 Aug
0 wk
17 May
1 Aug
2 wk after
Garden sage
Salvia officinalis
1 – 15 Mar
2 May
8-10 wk
10 May
27 Jun
1 wk after
Common thyme
Thymus vulgaris
23 Feb – 9 Mar
7 May
8-10 wk
4 May
2 Jul
0 wk
Oregano
Origanum vulgare
9 – 23 Mar
21 May
6-8 wk
4 May
2 Jul
0 wk
29 May
22 Jun
4 wk after
Parsley
Petroselinum crispum
9 – 23 Mar
21 May
6-8 wk
4 May
2 Jul
0 wk
5 May
22 Jun
0 wk
Rosemary
Salvia rosmarinus
1 Feb – 1 Mar
23 Mar
10-14 wk
10 May
1 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
Greenhouse
17 – 24 Apr
4 May
3-4 wk
15 May
25 May
2 wk after
Cornflower
Centaurea cyanus
4 May
12 Jul
0 wk
5 May
2 Jul
0 wk
Statice
Limonium sinuatum
Fleece
6 – 20 Mar
27 Mar
8-10 wk
15 May
22 May
2 wk after
Sweet William
Dianthus barbatus
9 – 23 Mar
6-8 wk
4 May
0 wk
14 May
1 wk after
Snow-on-the-mountain
Euphorbia marginata
Fleece
20 Mar – 3 Apr
10 Apr
6-8 wk
15 May
22 May
2 wk after
23 Jun
7 wk after
Pinnate dahlia
Dahlia × pinnata
Fleece
15 – 29 Mar
17 Apr
6-8 wk
10 May
29 May
1 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
3 Apr – 1 May
17 Apr
4-8 wk
29 May
4 wk after
29 May
4 wk after
Foxglove
Digitalis purpurea
23 Feb – 9 Mar
8-10 wk
4 May
0 wk
17 May
2 wk after
Busy lizzie
Impatiens walleriana
15 Mar – 12 Apr
15 Apr
8-12 wk
7 Jun
10 Jun
5 wk after
Creeping zinnia
Sanvitalia procumbens
Fleece
20 Mar – 3 Apr
20 Apr
6-8 wk
15 May
1 Jun
2 wk after
Hyacinth bean
Dolichos lablab
Season too short
12 – 26 Apr
4-6 wk
24 May
3 wk after
Chinese lantern
Physalis alkekengi
1 – 15 Mar
17 Apr
8-10 wk
10 May
12 Jun
1 wk after
Love in a mist
Nigella damascena
4 May
27 Jun
0 wk
5 May
17 Jun
0 wk
Strawflower
Xerochrysum bracteatum
Greenhouse
13 – 27 Mar
12 Apr
6-8 wk
8 May
24 May
1 wk after
5 Jun
5 wk after
Purple-top vervain
Verbena bonariensis
15 Feb – 15 Mar
17 Apr
8-12 wk
10 May
12 Jun
1 wk after
Cardoon
Cynara cardunculus
Fleece
20 Feb – 20 Mar
18 Mar
8-12 wk
15 May
2 wk after
Regal-foxtail
Ptilotus nobilis
Season too short
20 Feb – 20 Mar
20 Mar
8-12 wk
15 May
15 May
2 wk after
Globe amaranth
Gomphrena globosa
Season too short
20 Mar – 3 Apr
3 Apr
6-8 wk
15 May
15 May
2 wk after
Corn poppy
Papaver rhoeas
4 May
12 Jul
0 wk
5 May
2 Jul
0 wk
Snapdragon
Antirrhinum majus
9 Feb – 9 Mar
7 May
8-12 wk
4 May
2 Jul
0 wk
14 May
22 Jun
1 wk after
Flossflower
Ageratum houstonianum
Fleece
15 – 29 Mar
6 Apr
8-10 wk
24 May
1 Jun
3 wk after
Sweet pea
Lathyrus odoratus
9 – 30 Mar
28 May
5-8 wk
4 May
2 Jul
0 wk
Stock
Matthiola incana
9 – 23 Mar
31 May
6-8 wk
4 May
12 Jul
0 wk
17 May
2 Jul
2 wk after
Wormwood
Artemisia absinthium
9 – 23 Mar
1 May
6-8 wk
4 May
12 Jun
0 wk
17 May
2 Jun
2 wk after
Mexican sunflower
Tithonia rotundifolia
Season too short
3 – 17 Apr
12 Apr
4-6 wk
15 May
2 wk after
Garden pansy
Viola × wittrockiana
23 Feb – 9 Mar
17 May
8-10 wk
4 May
12 Jul
0 wk
14 May
2 Jul
1 wk after
Petunia
Petunia
Fleece
20 Feb – 20 Mar
27 Mar
8-12 wk
15 May
22 May
2 wk after
Sweet Scabious
Scabiosa atropurpurea
15 – 29 Mar
1 May
6-8 wk
10 May
12 Jun
1 wk after
16 Jun
6 wk after
Common zinnia
Zinnia elegans
Fleece
3 – 17 Apr
27 Apr
4-6 wk
15 May
25 May
2 wk after
Common morning glory
Ipomoea purpurea
Greenhouse
10 – 24 Apr
4 May
3-5 wk
15 May
25 May
2 wk after
Garden cosmos
Cosmos bipinnatus
Fleece
3 – 17 Apr
1 May
4-6 wk
15 May
29 May
2 wk after
29 May
4 wk after
Scarlet milkweed
Asclepias curassavica
Greenhouse
1 – 29 Mar
19 Apr
8-12 wk
24 May
14 Jun
3 wk after
Bee balm
Monarda didyma
9 Feb – 9 Mar
17 Apr
8-12 wk
4 May
12 Jun
0 wk
29 May
2 Jun
4 wk after
Yarrow
Achillea millefolium
9 – 23 Mar
1 Apr
6-8 wk
4 May
13 May
0 wk
17 May
2 wk after
Safflower
Carthamus tinctorius
4 May
12 Jun
0 wk
5 May
2 Jun
0 wk
Iceland poppy
Papaver nudicaule
Season too short
9 – 23 Mar
21 May
6-8 wk
4 May
2 Jul
0 wk
18 Apr
22 Jun
2 wk before
Bishop's flower
Ammi majus
23 Mar – 6 Apr
4 Jun
4-6 wk
4 May
2 Jul
0 wk
17 May
22 Jun
2 wk after
Drumsticks
Pycnosorus globosus
Season too short
20 Feb – 6 Mar
28 Feb
10-12 wk
15 May
2 wk after
Sunflower
Helianthus annuus
26 Apr – 3 May
31 May
3-4 wk
24 May
21 Jun
3 wk after
29 May
11 Jun
4 wk after
China aster
Callistephus chinensis
29 Mar – 12 Apr
20 May
6-8 wk
24 May
1 Jul
3 wk after
16 Jun
21 Jun
6 wk after
Annual phlox
Phlox drummondii
20 Mar – 3 Apr
12 Apr
6-8 wk
15 May
24 May
2 wk after
16 Jun
6 wk after
Hollyhock
Alcea rosea
9 – 23 Mar
6-8 wk
4 May
0 wk
17 May
2 wk after
Alpine delphinium
Delphinium elatum
9 Feb – 9 Mar
17 Apr
8-12 wk
4 May
12 Jun
0 wk
29 May
2 Jun
4 wk after
African marigold
Tagetes erecta
Fleece
20 Mar – 3 Apr
20 Apr
6-8 wk
15 May
1 Jun
2 wk after
Black-eyed Susan
Rudbeckia hirta
15 – 29 Mar
10 May
6-8 wk
10 May
21 Jun
1 wk after
16 Jun
6 wk after
Wood sage
Salvia nemorosa
23 Feb – 9 Mar
7 Apr
8-10 wk
4 May
2 Jun
0 wk
29 May
4 wk after
Black-eyed susan vine
Thunbergia alata
Greenhouse
6 Mar – 3 Apr
13 Apr
6-10 wk
15 May
25 May
2 wk after
California goldenpoppy
Eschscholzia californica
4 May
12 Jul
0 wk
5 May
2 Jul
0 wk
Painted tongue
Salpiglossis sinuata
15 – 29 Mar
24 Apr
8-10 wk
24 May
19 Jun
3 wk after
Water forget-me-not
Myosotis scorpioides
9 – 23 Mar
1 May
6-8 wk
4 May
12 Jun
0 wk
17 May
2 Jun
2 wk after