When to sow beans?
- Botanical name
- Phaseolus vulgaris
- Family
- Fabaceae
Beans are sown outdoors from May to June, 3 cm deep. They are harvested from July to October.
Beans are annual plants. The edible parts are the fruit and seeds.
Beans through the year
- indoor sowing
- transplanting
- outdoor sowing
- harvest
In short
The last frost is not on the same day everywhere, so the recorded weeks are a guide and not a date.
Growing conditions
Companions in the bed
Companion planting is tradition and not an agronomic claim. What is recorded is which pairs sources recommend and which they advise against.
Next to cucumbers the neighbours go to the edge of the bed.
Kohlrabi is a quick catch crop.
The pumpkin is part of the Three Sisters. It holds for squash in general, so for the courgette as well.
The sunflower is a living support instead of a pole. It works only if it is sown a few weeks earlier.
Corn and beans are part of the Three Sisters, a practice thousands of years old. The bean has to be a climbing variety and the corn tall enough beforehand.
- “Widely cited” means the pair is named by three or more independent sources.
- “Cited” means the pair is named by one source or two.
Pests and diseases
Listed here is every problem for which the sources name this plant as a host. The problems are not listed in order of how common they are.
Powdery mildew
disease- Signs
- A white, floury coating spreads over the leaves, first on the lower and older ones. The leaf under it yellows and dries up. The fruit stays small, because the plant loses leaf surface.
- Prevention
- Plant resistant varieties, leave an airy spacing and sun, and clear the debris at the end of the season. Unlike most fungi it is not helped by wet foliage, since it spreads in heat and high air humidity, in a dry summer too.
Keep track of your plants with Tendask
Log the task and set a reminder for the next one. Every plant keeps its own history, so there is nothing to guess at.
Related plants
The plants below are in the same botanical family (Fabaceae).
Sources about the plant: Bayerische Landesanstalt für Weinbau und Gartenbau, Clemson Cooperative Extension, GBIF Backbone Taxonomy, KGZS Kmetijsko gozdarska zbornica Slovenije, KGZS Zavod Ljubljana, NC State Extension Plant Toolbox, Royal Horticultural Society, Semenarna Ljubljana, University of Illinois Extension, University of Maryland Extension, Utah State University Extension, Wikidata. Checked between 14 and 28 August 2026. The problem descriptions also draw on: UF/IFAS Extension, University of Wisconsin-Madison Division of Extension.