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Phaseolus vulgaris
Growing calendar
Typical timing for central Japan (Kanto region). Shift it for your own climate, and record your actual dates.
Guides
- How to Sow Green Beans: Soil Temperature, Depth and Spacing
- Supporting Green Beans: Wigwams, Trellises and Bush Bean Staking
- How to Water and Feed Green Beans for a Heavy Crop
- Green Bean Growing Calendar: From Sowing to Clearing the Row
- Green Bean Problems: Aphids, Rust, Mosaic Virus and Bean Beetles
- When to Pick Green Beans and How to Keep Them
Common problems
Start from what you can see on the plant.
Pests and diseases (49)
Problems recorded for this plant, most serious first.
Stink Bugs
CommonPest
Small feeding punctures on fruit become sunken or turn spongy and discolored. On legumes the pods fail to fill, and fruit drop and deformity increase.
Sclerotinia Rot
CommonDisease
The crown, stem or head rots in a water-soaked way and is covered in white cottony mycelium. Black sclerotia later form inside and on the surface, and the plant wilts and dies.
Rust
CommonDisease
Small raised orange-yellow to red-brown pustules form on both leaf surfaces, then rupture and release powdery spores. Heavy infection yellows the leaves and kills them early.
Seedcorn Maggot
CommonPest
Emergence is uneven, and digging up seed reveals white maggots inside the seed or hypocotyl. In transplants the stem base rots and the plant wilts.
Curved Fruit
OccasionalDisorder
Fruit bends into a bow shape or pinches in partway so that it sizes unevenly. When curved fruit increases, overall plant growth is usually slowing too.
Bacterial Wilt
Disease
Leaves wilt while still green during the day and recover in the morning and evening; after a few days of this the plant dies. Cut the stem and stand it in water and a milky white bacterial ooze streams out in threads.
Fusarium Wilt
Disease
Lower leaves wilt during the day and recover morning and evening, and this cycle repeats as the plant dies back. Cutting the stem reveals characteristic browning of the vascular tissue.
Powdery Mildew
Disease
White patches appear scattered on the upper leaf surface at first, then the whole leaf is coated in a white powder. Leaves later yellow, brown and die back, and reduced photosynthesis cuts growth and yield.
Brown Leaf Spot
Disease
Small light brown to gray-brown spots form on the leaves and enlarge into irregular lesions. When they merge the whole leaf dies and plant vigor drops sharply.
Cucumber Mosaic Virus
Disease
New leaves show a yellow-green mosaic, crinkle, and the whole plant becomes stunted. Fruit colors unevenly and grows misshapen.
Southern Blight
Disease
The stem rots at soil level and white silky mycelium spreads over the crown and the surrounding soil surface. Brown sclerotia the size of rapeseed then form and the plant wilts and dies rapidly.
Anthracnose
Disease
Light brown to dark brown round lesions with sharp margins form on leaves and fruit, slightly sunken in the center. In wet weather salmon-pink slimy spore masses ooze out on the lesions.
Gummy Stem Blight
Disease
Gray-brown lesions form at stem nodes and the crown, exuding brown gum and splitting lengthwise. Round to V-shaped brown lesions form on leaves, dotted with small black fruiting bodies.
Tomato Yellow Leaf Curl
Disease
New leaves stay small, turn yellow and curl upward at the margins. The plant becomes stunted, flowers drop, and almost no fruit sets.
Damping-off
Disease
The stem pinches in at soil level, turning water-soaked to brown and thin, and the seedling topples over. Infection before emergence makes the stand uneven with missing plants.
Root-lesion Nematode
Pest
Elongated blackish brown necrotic lesions form on the root surface and fine roots rot away. Above ground the stand is uneven and plants stay small with pale foliage.
Root Rot
Disease
Fine roots rot brown to blackish brown, growth stops and the lower leaves yellow. The plant wilts easily in the daytime and eventually dies outright.
Root-knot Nematode
Pest
The plant wilts in the daytime and does not recover with feeding or watering. Pull it up and the roots carry beaded chains of galls of varying size with few fine roots.
Gray Mold
Disease
Water-soaked brown lesions form on flowers, fruit and leaves, densely covered by a fuzzy gray mold. Fruit rots and drops, and decay continues in storage after harvest.
Bacterial Spot
Disease
Small water-soaked spots appear on the leaves, later turning brown with yellowing around them. Fruit develops water-soaked or scabby spots from which rot spreads.
Ring Rot
Disease
The bark of branches and trunk becomes rough and warty, serving as the inoculum source. Fruit develops round brown lesions that soften and rot in concentric rings.
