GrowSabzHow to grow lemon in pots
Also called limoo, leemoo, limone, zitron · Citrus limon
لیموں
- ☀️ Sunlight
- 6–8hours daily
- 💧 Water
- 9.0 Levery 4 days, 40 L pot
- 🌡️ Ideal temp
- 21–30°C
- 🪴 Min pot
- 40 L45 cm deep
- 🧺 Harvest
- 180–270days from sowing
- ⚖️ Yield
- 3 kgper 20 L pot
Lemon is a long game. From seed it takes 3-6 years before you see a harvest, which is why most growers start from a nursery plant. Container growing is entirely possible, but the container has to be sized for a plant that will live in it for years.
Short answer
Grow lemon in a 40 litre container at least 45 cm deep, watering about 1500 ml per 10 litres of soil every 4 days, and keep temperatures between 21 and 30 °C. First harvest comes 180–270 days after sowing.
Where to plant it
What size pot does lemon need?
40 litres and 45 cm deep is the realistic minimum for a single plant. Pick a container below to see what changes.
| Container | Minimum size | Depth | Notes |
|---|---|---|---|
| Pot | 40 L | 45 cm | Use large pots with excellent drainage. Repot every 2-3 years. |
| Grow bag | 40 L | 45 cm | Fabric bags provide good aeration and drainage, but dry out faster. |
| Open ground | — | 60 cm | Ensure well-draining soil and adequate spacing from other plants/structures. |
| Raised bed | 60 L | 50 cm | Excellent for controlling soil conditions and drainage. Ensure sufficient depth. |
Watering
How often should you water lemon?
Every 4 days through the growing season, at about 1500 ml per 10 litres of soil — every 2 days in hot weather, every 7 days when it turns cool. Water in the early morning. Drip irrigation or slow deep watering works best.
Too little water
- leaf curling
- leaf drop
- fruit drop
- small fruit
Too much water
- yellow leaves
- root rot
- leaf drop
- stunted growth
Avoid: shallow frequent watering; standing water; water on leaves (can promote fungal issues).
Climate
Can you grow lemon where you live?
No hardiness zone needed — compare your actual temperatures against the plant's own limits.
| Ideal range | 21 – 30 °C |
|---|---|
| Survives | -2 – 40 °C |
| Germinates above | 20 °C — best at 25 °C, about 14 days |
| Flowers drop | above 38 °C, or below 10 °C |
| Sunlight | 6–12 hrs/day, best 8 |
| Frost | Highly sensitive — will not survive it |
The flower-drop thresholds matter more than the survival ones. A plant can be perfectly alive at 40 °C and still give you nothing.
How cold is too cold for lemon? Check your temperaturesEnter your night low and day high — see if it survives, and if it will cropTimeline
Lemon growing stages, day by day
Click any stage to see what's happening. Durations shift with temperature — a warm season runs roughly a quarter faster than a cool one.
Feeding
Fertiliser schedule for lemon
Feed on the interval below, changing what you give as the plant shifts from making leaves to making fruit.
| Stage | What to use | Per 10 L | Every |
|---|
How to prepare each feed
Common mistakes
Why lemon fails, and how to avoid it
- A container that is too small
Below 40 litres the root run is too shallow. The plant grows, flowers late, and drops whatever it sets because it cannot support the crop.
- Watering too lightly
A daily splash wets the top few centimetres and nothing else. Lemon wants about 1500 ml per 10 litres of soil — one deep soak beats three shallow ones.
- Wetting the leaves
Overhead watering in the evening leaves foliage damp overnight, which is exactly the condition fungal disease needs. Water the soil, early in the day.
- Ignoring the flower-drop threshold
Above 38 °C, or below 10 °C, flowers fall before setting. The plant can look perfectly healthy and still give you nothing — shade it through the hottest hours.
- Harvesting too late
Left too long the colour changes, seeds harden and the flavour sharpens. Pick on the signs listed below, not on the calendar.
- Planting it beside Fennel
Produces substances from its roots that can inhibit the growth of many plants, including citrus.
- Leaving it out through a cold snap
Lemon is highly frost-sensitive. One night below -2 °C can end the plant outright — bring containers in or cover them.
Companions
What to plant with lemon
Good neighbours
Repels nematodes and other harmful soil pests, improving root health for citrus.
Acts as a trap crop for aphids, drawing them away from the lemon tree. Also deters whiteflies.
Emits a strong scent that deters spider mites, aphids, and other common citrus pests.
Fixes nitrogen in the soil, enriching it and providing nutrients for the lemon tree. Improves soil structure.
Attracts beneficial pollinators like bees, which are essential for lemon fruit set, and may deter some pests.
Keep apart from
Produces substances from its roots that can inhibit the growth of many plants, including citrus.
Releases juglone, a chemical toxic to many plants, which can stunt or kill lemon trees.
Members of the brassica family (cabbage, broccoli, kale) can compete heavily for nutrients and may release compounds that inhibit citrus growth.
Mint is an aggressive spreader and can quickly outcompete young lemon trees for water and nutrients, potentially choking them out.
Problems
Lemon pests and diseases
Each lists the weather that brings it on, so you know when to start checking rather than reacting once it's established.
Citrus Leaf Miner humidity any · temp >18
Larvae tunnel within new leaves, causing silvery trails and leaf distortion. Primarily affects new growth.
Aphids humidity any · temp 15-25
Small, soft-bodied insects cluster on new growth, sucking sap and secreting sticky honeydew, leading to sooty mold.
Scale Insects humidity any · temp any
Small, immobile insects that attach to stems and leaves, covered by a waxy shell. They suck sap and cause yellowing and leaf drop.
Mealybugs humidity any · temp any
Soft-bodied, segmented insects covered in white, cottony wax. They feed on sap, causing stunted growth and honeydew production.
Spider Mites humidity <50% · temp >27
Tiny pests that cause stippling (tiny dots) on leaves, leading to yellowing and premature leaf drop. Fine webbing may be visible.
Greasy Spot humidity >80% · temp 20-30
Fungal disease causing yellowish-brown, blister-like spots on the underside of leaves, which become greasy and dark. Can lead to defoliation.
Citrus Canker humidity >90% · temp 20-30
Bacterial disease causing raised, tan-to-brown lesions on leaves, stems, and fruit, often with a water-soaked margin and yellow halo.
Phytophthora Root Rot humidity high_soil_moisture · temp 18-28
Fungal disease caused by excessive soil moisture. Leads to yellowing leaves, wilting, branch dieback, and eventual tree death.
Sooty Mold humidity any · temp any
Black, powdery fungal growth on leaves and fruit, which grows on honeydew secreted by pests like aphids and scale. Blocks photosynthesis.
Iron Chlorosis humidity any · temp any
Leaves turn yellow with green veins, especially on new growth. Caused by iron deficiency, often due to high soil pH or poor drainage.
Zinc Deficiency humidity any · temp any
Causes small, narrow leaves with yellow mottling between green veins (mottle-leaf). New growth is most affected.
Lemon Scab humidity >90% · temp 18-24
Fungal disease causing raised, warty, corky lesions on fruit, leaves, and twigs. Affects appearance but not internal quality.
Harvest
When to harvest lemon
First picking falls between day 180 and day 270, and the plant then keeps producing for about 90 days. Pick often — what you leave on the plant signals it to stop making more.
How to tell it's ready
- Full yellow color
- Firm to the touch
- Heavy for its size
How much to expect
Storing it: Room temperature for a week, then refrigerate for up to 3-4 weeks.
Questions
Lemon: common questions
How long does lemon take to grow?
About 730 days from sowing to the first harvest, with picking usually starting between day 180 and day 270. It then keeps producing for roughly 90 more days. Warm weather pulls that forward; cool weather pushes it back.
What size pot does lemon need?
At least 40 litres and 45 cm deep for one plant. A raised bed wants 60 litres of soil and 50 cm of depth.
How often should I water lemon?
About 1500 ml per 10 litres of soil, every 4 days in normal weather — every 2 days when it is hot and every 7 days when cool. Water in the early morning.
What temperature does lemon need?
It does best between 21 °C and 30 °C and survives from -2 °C to 40 °C. Seed needs soil above 20 °C to germinate, ideally around 25 °C.
Can I grow lemon in winter?
Not outdoors anywhere that frosts — it is highly frost-sensitive and will not survive it. In a frost-free winter it grows slowly; anywhere colder, treat it as a warm-season crop.
How do I know when lemon is ready to harvest?
Full yellow color; Firm to the touch; Heavy for its size. Once picked: room temperature for a week, then refrigerate for up to 3-4 weeks.
How much does one lemon plant produce?
Roughly 3 kg from a 20 litre container, or about 15 kg in open ground. Larger containers give proportionally more, up to a point.