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Growing guides

Growing guides: fields, gardens and home growing

Practical guides for fields, gardens, homes, windowsills and balconies. Every figure comes from a cited source. The full guide text is in Finnish; key figures and sources are shown here.

Rule: we never invent figures. If a source has no exact value, we say so.

Home growing: windowsill, balcony and terrace

Herbs and leafy greens

Lettuce

Lactuca sativa

A fast, easy leaf crop for beds, boxes and balconies. Sow several times.

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Basil

Ocimum basilicum

A warmth- and light-loving herb for the windowsill and summer outdoors. Snip young leaves as needed.

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Parsley

Petroselinum crispum

Slow to germinate but hardy. Soak seeds before sowing.

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Dill

Anethum graveolens

A staple Finnish herb. Sow several times for a steady supply.

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Thyme

Thymus vulgaris ym.

A sun-loving, drought-tolerant perennial herb for pots and balconies. Wet roots are a bigger risk than drought.

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Rosemary

Salvia rosmarinus (Rosmarinus officinalis)

An evergreen shrubby herb for a large pot; needs warmth and sharp drainage and hates wet roots.

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Oregano

Origanum vulgare

A drought-tolerant perennial herb for a sunny pot. Can stay productive indoors over winter with enough light and warmth.

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Mint

Mentha spp.

A fast-spreading perennial: always grow it in its own pot. Harvests already in the first summer.

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Coriander (cilantro)

Coriandrum sativum

A fast but short-lived leaf herb. Sow straight into its final pot – coriander dislikes transplanting.

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Sage

Salvia officinalis

A drought-tolerant evergreen shrubby herb for a sunny pot. Replace from cuttings every few years.

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Chives

Allium schoenoprasum

An easy perennial allium for pots and windowsills. The flowers are edible too.

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Lemon balm

Melissa officinalis

A lemon-scented perennial herb. Grow in a pot if you do not want it to spread.

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Tarragon

Artemisia dracunculus

French tarragon has the better flavour but is tender in winter; Russian is tougher. A pot makes winter protection easier.

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Spinach

Spinacia oleracea

A fast leafy crop for pots and balconies in cool weather. Heat and drought make it bolt.

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New Zealand spinach

Tetragonia tetragonioides

A heat-tolerant spinach substitute that crops all summer. A couple of plants are enough for a pot.

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Chard

Beta vulgaris subsp. vulgaris (Cicla-ryhmä)

A decorative, long-cropping leafy vegetable for a large pot. Pick outer leaves and new ones grow from the centre.

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Rocket (arugula)

Eruca vesicaria subsp. sativa, Diplotaxis tenuifolia

A quick salad crop for pots and window boxes. Shade in hot spells delays flowering.

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Kale

Brassica oleracea (Acephala-ryhmä)

A hardy leafy crop: compact varieties in a large pot, baby leaves from dense sowings, microgreens on the windowsill.

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Shoots and microgreens (pea, sunflower, garden cress)

Pisum sativum, Helianthus annuus, Lepidium sativum ym.

The fastest windowsill crop: first shoots in about a week. No fertiliser needed.

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Vegetables

Pea

Pisum sativum

Nitrogen-fixing legume: 38,600 ha feed pea and 5,600 ha food pea (2025), 4,047 ha garden pea.

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Potato

Solanum tuberosum

18,900 ha on farms (2025) and in most home gardens. Chitting, earthing up and rotation matter most.

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Carrot

Daucus carota

Finland's highest-yielding field vegetable: 1,691 ha and 78 million kg (2025). Seeds germinate slowly, in 2–3 weeks.

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Tomato

Solanum lycopersicum

A top greenhouse vegetable (36 million kg in 2025) and a home favourite. Needs light and warmth, but not above 27 °C.

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Cucumber

Cucumis sativus

The highest-yielding greenhouse vegetable (56 million kg in 2025). At home in a greenhouse or on a windowsill.

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Garlic

Allium sativum

Easy to plant in autumn or spring. Domestic strains give the best crop.

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Chilli and sweet pepper

Capsicum annuum

A popular windowsill and greenhouse plant. Needs warmth to germinate and a long head start.

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Aubergine (eggplant)

Solanum melongena

A heat- and light-hungry fruiting vegetable for a large pot, greenhouse or glazed balcony.

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Radish

Raphanus sativus

The quickest root crop for a window box: harvest in about a month in cool weather.

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Ginger

Zingiber officinale

A tropical rhizome that grows indoors in a pot, even from a shop-bought piece. Harvest after 8–10 months.

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Turmeric

Curcuma longa

A relative of ginger grown the same way indoors in a pot. Sprouts more slowly and grows taller.

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Dwarf French bean

Phaseolus vulgaris

A low bean that needs no support in a pot. Needs a warm spot.

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Runner bean

Phaseolus coccineus

A decorative climbing bean for a balcony trellis. Beans are eaten cooked.

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Fruit and berries

Strawberry

Fragaria × ananassa

Finland's main garden berry: 13 million kg of the 18 million kg berry crop (2025).

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Citrus in pots (Meyer lemon, kumquat, lime, mandarin)

Citrus × meyeri, Citrus (Fortunella) spp., Citrus × aurantiifolia ym., Citrus reticulata

Citrus grow well in pots: summer outdoors in a sunny spot, winter indoors somewhere bright and cool. Each type needs a different winter minimum.

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Fig

Ficus carica

A deciduous fruit tree that does well in a pot: restricted roots mean more fruit, and the pot can be moved under cover for winter.

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Dwarf banana ('Dwarf Cavendish')

Musa acuminata 'Dwarf Cavendish'

A striking foliage plant for a large pot. Indoors it rarely fruits, and the fruit is usually inedible.

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Olive

Olea europaea

A drought-tolerant evergreen for a large pot: summer outdoors in sun, winter protected from frost.

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Columnar apple and dwarf fruit trees

Malus domestica (pylväsmuoto ja kääpiöperusrungot)

A narrow columnar apple or an apple on a dwarfing rootstock suits a large pot on a balcony or terrace.

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Avocado from a stone

Persea americana

A shop-bought avocado stone easily becomes a foliage plant. Indoors it usually won't flower or fruit and tends to decline after a few years.

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Pineapple from the crown

Ananas comosus

The leafy crown of a pineapple grows into a new plant in a pot. Planting to harvest takes 18–24 months.

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Date palm from seed

Phoenix dactylifera

Date seeds germinate slowly in warmth. The sources say nothing about fruiting at home: grow it as a foliage palm.

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Passion fruit

Passiflora edulis

A fast-growing vine that needs support and warmth. Purple types are self-fertile; yellow types need another variety.

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Mango from seed

Mangifera indica

A mango seed can be grown into a seedling, but the sources give no indoor-growing instructions. Polyembryonic seeds come true; monoembryonic ones give hybrids.

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Grapevine in a container

Vitis vinifera

In a container a grapevine is trained as a small standard. It needs a warm, sunny spot and a cool winter period.

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Highbush blueberry in a container

Vaccinium corymbosum

Highbush blueberries suit containers if the growing medium is acidic. Two different varieties improve the crop.

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Field crops

Barley (spring barley)

Hordeum vulgare

Finland's most grown cereal: 367,300 ha of barley in 2025. Feed and malting barley are spring-sown.

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Oat

Avena sativa

Second most grown cereal (317,900 ha in 2025). Tolerates acidity better than other cereals and breaks foot-rot cycles.

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Spring wheat

Triticum aestivum

Bread cereal on 161,800 ha (2025). Needs good pH and enough nitrogen for protein.

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Winter wheat

Triticum aestivum

Autumn-sown wheat (73,000 ha in 2025). Overwintering is the main risk.

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Rye (winter rye)

Secale cereale

Traditional bread cereal (20,900 ha in 2025). Sown in late August.

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Turnip rape and oilseed rape

Brassica rapa / B. napus

Main oil crops: 45,200 ha turnip rape and 11,100 ha oilseed rape in 2025. Tiny seeds are sown shallow.

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Pea

Pisum sativum

Nitrogen-fixing legume: 38,600 ha feed pea and 5,600 ha food pea (2025), 4,047 ha garden pea.

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Faba bean

Vicia faba

Domestic protein crop (6,300 ha in 2025). Sown deep and early.

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Potato

Solanum tuberosum

18,900 ha on farms (2025) and in most home gardens. Chitting, earthing up and rotation matter most.

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Grass ley and red clover

Phleum pratense, Trifolium pratense ym.

Finland's largest field crop: 787,300 ha of forage leys (2025). Clover fixes nitrogen.

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Fibre hemp

Cannabis sativa

Separate full guide: legislation, variety, field, sowing, fertilising, season, harvest and drying, with sources.

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Vegetable garden and berries

Houseplants and herbs

Why these plants?

Field crops are chosen from Luke's 2025 crop area statistics. Garden crops are based on Luke's 2025 horticultural statistics and common home-garden plants. There is no official statistic on houseplant popularity: the selection is based on Martat's houseplant guides and common herbs. Home-growing plants (windowsill, balcony, terrace) come from our users' wish list; there is no popularity statistic for them either, and the guidance is based on Martat, the RHS and university extension services.

These are general guidelines. Always check the variety, seed packet or fertiliser instructions and current regulations.