Gadenin日本語Get the appCheck these first
- Does the browning start at the leaf edge, from a spot, or from the lowest leaves?
- Are there black specks, powder, or mould on the dead tissue?
- Did you fertilize, spray, or have a heatwave just before it started?
Most likely causes
From the pests and diseases recorded for this plant, the ones whose symptoms match, most serious first. Symptoms alone rarely confirm a cause, so use the linked page to check the signs and treatment.
Rust
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.
How to identify and treat: RustSouthern Blight
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.
How to identify and treat: Southern BlightLeaf Spot
Small round brown to gray-white lesions appear on the lower leaves, the centers turning gray with tiny black specks. As they multiply the leaf yellows and drops early.
How to identify and treat: Leaf SpotOther possible causes
- Powdery Mildew — White patches appear scattered on the upper leaf surface at first, then the whole leaf is …
- Downy Mildew — Pale yellow to yellow-brown angular lesions form on the upper leaf surface with a gray-pur…
- Sclerotinia Rot — The crown, stem or head rots in a water-soaked way and is covered in white cottony myceliu…
- Fusarium Wilt — Lower leaves wilt during the day and recover morning and evening, and this cycle repeats a…
- Brown Leaf Spot — Small light brown to gray-brown spots form on the leaves and enlarge into irregular lesion…
- Brown Rot — Blossoms brown and die, and round brown lesions on fruit expand rapidly. Grayish white pow…
- Fusarium Yellows — Yellowing starts on the lower leaves, the petioles twist and the plant leans to one side. …
Other symptoms on this plant
What other growers did about it
A page like this one can tell you what edamame leaves turning brown and dying is and what to try. What it cannot tell you is what actually happened to someone who had it on the same plant, at the same point in the season, and what they did next.
Gadenin is a free garden journal built around that. You photograph the plant, tag what you are seeing, and the entries line up by date for each plant you grow.
- Tag the problem and the app tells you how many other growers have logged the same thing on the same plant.
- Growers who make their records public can be followed, so you can read what they did and how it turned out.
- Next season your own entries come back at the same point in the year, so you check the plant before it starts.
Free on iPhone. Recording, tagging and reading public records cost nothing.