Rocket
Also called: جرجير · Jarjeer · Arugula
The fastest crop in this guide — 21 days from seed to plate. Ideal for a beginner who needs an early win.
The year at a glance
Each month is split in half. The outline marks now.
Stage by stage
Stage 1 of 7
Seed
Days 0–2
Seed
Days 0–2The seed sits in the soil taking up water and swelling. Nothing shows above the surface — everything is happening underground.
Do now
- Water lightly and often so the soil stays damp but never soaked. Letting it dry out between waterings kills the seed before it sprouts.
- Cover the surface with a thin layer of straw or compost to slow evaporation and steady the temperature.
- Label what you sowed and when. You will need the date to work out the harvest.
Watch for
- A hard crust forming on sandy soil after watering, which traps the sprout underneath. Break it gently.
- Ants carrying small seeds away — a very common problem in Qatari gardens.
In Qatar
Scatter the seed on the surface and dust it over very lightly. Do not bother with rows — rocket is grown thick.
Germination
Days 3–6The seed coat splits: a root pushes down and a shoot pushes up. The two seed leaves that appear are not true leaves — they are the seed’s own food store.
Do now
- Keep moisture constant. The first root is very fine and a single dry day can end the seedling.
- Remove any covering as soon as the first sprout shows, or it will stretch thin looking for light.
- Give bright, indirect light. Direct midday sun will scorch a new seedling within hours.
Watch for
- A long, thin, pale stem: the seedling is not getting enough light and will collapse.
- Sudden wilting with a pinched stem at soil level — damping off, caused by overwatering.
In Qatar
Up in three days in November — the fastest germination in this guide, and very encouraging for a beginner.
Seedling
Days 7–14The first true leaves appear, shaped differently from the seed leaves. The plant is now feeding itself and the roots are branching fast.
Do now
- Thin crowded seedlings and keep the strongest. Crowding gives you many weak plants instead of one good one.
- Start watering less often but more deeply, to drive the roots downwards.
- Harden the seedling off — build up its sun exposure over a week before transplanting.
Watch for
- Yellowing lower leaves: nitrogen shortage, very common in Qatar’s poor sandy soil.
- Small holes or chewed edges, meaning snails or young grasshoppers.
In Qatar
Barely needs thinning. Rocket accepts crowding and gives more tender leaves for it.
Leaf growth
Days 15–20Leaves multiply fast and the rosette widens. All the energy goes into leaf — which is the crop itself, so speed is the goal.
Do now
- Feed nitrogen every ten days. Leafy crops want more of it than anything else you grow.
- Keep the moisture even. Any drought turns the leaves bitter and tough, permanently.
- Clear competing weeds. Leafy crops root shallowly and lose the competition easily.
Watch for
- Small, thick, dark leaves: the plant is thirsty or the soil is salty.
- Aphids gathering in the heart of the plant, where they are hard to wash out.
In Qatar
A very short stage — six days. Check it daily from here.
Harvest
Days 21–45The leaves have reached size and are at their most tender. The window is short before the plant starts running to flower.
Do now
- Pick the outer leaves and leave the heart growing — you can crop the same plant for weeks.
- Harvest early in the morning. Leaves cut at midday wilt within an hour in Qatar’s air.
- Rinse in cold water straight after cutting and refrigerate immediately.
Watch for
- A stalk starting to rise from the centre: the plant is about to bolt — harvest everything now.
- Bitterness appearing suddenly after a hot spell.
In Qatar
Cut at about 10 cm. Larger leaves turn very fierce in Qatar’s climate specifically.
Bolting
Days 46–60Heat or lengthening days convince the plant its life is ending, so it rushes to make seed. The leaves turn bitter and tough.
Do now
- The leaves are past salad use. Cook them if the bitterness is bearable.
- Let the strongest plant finish flowering and collect its seed for another season.
- The flowers pull in beneficial insects, so leave some standing if you have another crop nearby.
Watch for
- Early bolting caused by sowing too late in the season — the commonest mistake in Qatar.
- Seed scattering itself and coming back as a weed next season.
In Qatar
The white flowers are edible and taste of rocket. Use them in a salad.
End of cycle
Days 61–75The plant’s cycle is over. The roots left behind break down and add organic matter if you leave them.
Do now
- Cut the plant at soil level and leave the roots in place to rot down.
- Sow a crop from a different family in the same spot to break the pest cycle.
- Add compost and cover the soil before the summer heat.
Watch for
- Planting the same family twice running in the same bed.
- Leaving the soil bare in the sun all summer.
In Qatar
Let one plant seed itself and you will find rocket coming up on its own next season.
- Water
- Medium
- Salt tolerance
- Medium
- Heat tolerance
- Low
3 L/week in winter, 8 L in summer
Soil preparation
Needs very little preparation. Light compost worked into the top 10 cm is plenty.
Pests
Flea beetle
- Sign
- Many small round shot-holes through the leaves.
- What to do
- Cover with fine insect mesh from the day you sow. Easier and more effective than any spray.
Aphids
- Sign
- Clusters on the young leaves.
- What to do
- Water blast. Rocket is harvested in three weeks, so nothing stronger is justified.
Common problems
Overwhelmingly sharp taste
- Cause
- Heat or thirst — rocket gets fiercer under stress.
- Fix
- Grow it in part shade and water regularly. Rocket grown in Al-Murabbaniya is far milder.
Bolting within weeks
- Cause
- February warmth. Rocket is among the quickest of all crops to bolt.
- Fix
- Sow a small batch every fortnight rather than one big one.
Picking
Cut with scissors 3 cm above the soil and it will regrow two or three times.
Keeping
Two days at most. Rocket wilts faster than any other leaf here — cut it just before you use it.