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Citrus limon
Growing calendar
Typical timing for central Japan (Kanto region). Shift it for your own climate, and record your actual dates.
Guides
- Pruning a Lemon Tree: Water Shoots, Thorns and Rootstock Suckers
- Citrus Leafminer on Lemon Trees: Silver Trails, Curled Leaves and What to Do
- Overwintering a Lemon Tree Indoors: Leaf Drop, Yellow Leaves and Cold Roots
- Planting a Lemon Tree in a Pot: Size, Mix and Where to Stand It
- Lemon Tree Care Calendar: What to Do Season by Season
- When to Pick Lemons: Ripeness, Cutting and Why It Takes Six Months
Common problems
Start from what you can see on the plant.
Pests and diseases (122)
Problems recorded for this plant, most serious first.
Scale Insects
MajorPest
Small white or brown shell-like insects dot the shoots and leaves. The plant loses vigor and honeydew-fed sooty mold blackens the shoots and foliage.
Longhorn Beetles
MajorPest
Sawdust-like frass is pushed out at the trunk base or branch crotches. The wood is hollowed out, the tree loses vigor, and the trunk may snap in strong wind.
Citrus Melanose
MajorDisease
Tiny dark brown specks are scattered over fruit and leaves, sometimes clustering into tear-streaks or a sandpaper texture. Heavy infection makes the rind rough and badly cuts appearance value.
Sooty Mold
MajorDisease
A thin black sooty mold spreads over the upper leaf surface, shoots and fruit. It does not invade the tissue itself, but it blocks photosynthesis and badly spoils appearance.
Citrus Leafminer
MajorPest
Silvery winding mines run through newly expanded young leaves, which crinkle and roll inward, with a translucent larva at the head of the mine. It does not attack hardened spring leaves and concentrates on shoots growing from summer into autumn.
Mealybugs
CommonPest
White cottony masses appear at leaf axils, on fruit clusters and at the edge of the potting soil. Sap feeding weakens growth and the honeydew leads to sooty mold.
Iron Deficiency
CommonDisorder
Yellow-white interveinal chlorosis begins on the new leaves with only the veins staying green. In severe cases the new leaves bleach entirely white and growth stops.
Leafrollers
CommonPest
Leaves are webbed into tubes or folded in half, with a green or brown caterpillar inside. Shoot tips and fruit surfaces are also gnawed, disrupting growth.
