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Summary
Physical Characteristics
Tropaeolum minus is a PERENNIAL growing to 0.3 m (1ft) by 0.5 m (1ft 8in).
See above for USDA hardiness. It is hardy to UK zone 9 and is frost tender. It is in flower from July to September, and the seeds ripen from August to October. The species is hermaphrodite (has both male and female organs).
Suitable for: light (sandy) and medium (loamy) soils and prefers well-drained soil. Suitable pH: mildly acid, neutral and basic (mildly alkaline) soils. It cannot grow in the shade. It prefers moist soil.
UK Hardiness Map
US Hardiness Map
Synonyms
Habitats
Cultivated Beds;
Edible Uses
Edible Parts: Flowers Leaves Seed Seedpod
Edible Uses: Condiment
Leaves - raw[2, 27, 37]. A hot watercress flavour[183]. The leaves are very nice in small quantities on their own or as a flavouring in mixed salads, they are available from early summer until the first frosts of the autumn[K]. Flowers - raw[2, 27, 37, 183]. A very ornamental and tasty addition to the salad bowl, the flowers have a hot watercress flavour[7]. The flowers contain about 130mg vitamin C per 100g[218]. Young seed pods - raw[2, 27, 37]. These are even hotter than the flowers or leaves[K]. The seed pods can also be harvested whilst immature and pickled for use as a caper substitute[183]. Seed - raw or cooked. Very hot[K]. The mature seed can be ground into a powder and used as a pepper substitute[183].
References More on Edible Uses
Medicinal Uses
Plants For A Future can not take any responsibility for any adverse effects from the use of plants. Always seek advice from a professional before using a plant medicinally.
Antibiotic Antiseptic Aperient Diuretic Expectorant Vitamin C
The whole plant is antibiotic, antiseptic, aperient, diuretic and expectorant[7, 21]. It is useful in breaking up congestion in the respiratory passages and chest during colds[21]. The juice or tea can be used as an external or internal antiseptic[21]. The plant has antibiotic properties towards aerobic spore forming bacteria[61], it is also said to have a beneficial effect on the blood by promoting the formation of blood cells[21].
References More on Medicinal Uses
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Other Uses
Insecticide Repellent
The growing plant attracts aphids away from other plants. Research indicates that aphids flying over plants with orange or yellow flowers do not stop, nor do they prey on plants growing next to or above the flowers[201]. An insecticide can be made from an infusion of leaves and soap flakes[201].
Special Uses
References More on Other Uses
Cultivation details
Prefers a rich light well-drained soil in full sun or partial shade[37]. More and lusher leaves are produced when the plant is growing in a rich soil, though less flowers are produced[238]. When grown in a soil of low fertility the leaves are smaller and less lush, though more flowers are produced[200, K] The plant will also succeed in very poor soils[202]. Dislikes drought[37]. This species is not frost hardy in Britain but it is often grown in the flower garden as an annual when it will frequently self-sow[37]. In cold springs, however, the seed will often not germinate until mid or even late summer, which is too late to produce a reasonable crop[K]. There are some named varieties[183]. Grows well with radishes, cabbages and fruit trees, improving their growth and flavour[14, 20]. A good companion for many plants, keeping many harmful insects at bay and also improving the growth and flavour of neighbouring crops[201]. Aphids on nasturtiums indicate a lime deficiency in the soil[20]. Slugs and snails love eating this plant, so it can be grown to attract them away from other plants[201]. The caterpillars of the cabbage white butterfly can be a nuisance and often cause considerable damage to the leaves[219].
References Carbon Farming Information and Carbon Sequestration Information
Temperature Converter
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Propagation
Seed - sow April in situ. The seed usually germinates within 2 weeks. Seed can also be sown in March in pots in a greenhouse and planted out in late spring or early summer.
Other Names
If available other names are mentioned here
Found In
Countries where the plant has been found are listed here if the information is available
Weed Potential
Right plant wrong place. We are currently updating this section.
Please note that a plant may be invasive in one area but may not in your area so it’s worth checking.
Conservation Status
IUCN Red List of Threatened Plants Status :
Growth: S = slow M = medium F = fast. Soil: L = light (sandy) M = medium H = heavy (clay). pH: A = acid N = neutral B = basic (alkaline). Shade: F = full shade S = semi-shade N = no shade. Moisture: D = dry M = Moist We = wet Wa = water.
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Author
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Botanical References
200
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