Suyo Long Cucumber
Cucumis sativus 'Suyo Long'
vegetableA Chinese heirloom cucumber producing extra-long ribbed fruits up to 18 inches with a mild, sweet, burpless flavor and very thin skin. One of the most productive and heat-tolerant cucumbers available. The ribbed surface and tapered ends are distinctive. An excellent trellis cucumber that grows straight when vertical and produces prolifically through hot summers.
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Sun
full sun
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Water
Every 2 days
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Harvest
~60 days
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Difficulty
easy
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Lifecycle
annual
One season, then done
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Spacing
12-18 in (trellised)
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Planting Depth
1/2-1 in
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Soil pH
6.0-7.0
Growing Details
Soil Type
Rich, well-draining
Hardiness Zones
Zones 3 – 10
Grown as an annual — this range is its winter hardiness, but you can grow it for a single season in any zone.
When to Fertilize
At planting with compost; side-dress lightly when vines run
Fertilizer
Balanced 10-10-10 or fish emulsion; moderate rate
🌱 Growing Guide
Direct sow after last frost when soil is above 65 F. Suyo Long is a vigorous climber — provide a sturdy trellis at least 5 feet tall. Fruits grow fastest and straightest when trained vertically. More heat-tolerant than many cucumbers, continuing to produce through midsummer when others slow down. Pick every 2 to 3 days. Water consistently to prevent bitterness.
Planting Calendar
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Start seeds indoors
Mar 25
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Transplant outdoors
Apr 29
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Projected first harvest
Jun 28
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FFeb
MMar
AApr
MMay
JJun
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AAug
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✅ Plant alongside
Good neighbors that attract beneficial insects or deter pests
- Radish — Deters cucumber beetles interplanted at the base
- Nasturtium — Aphid trap crop; edible flowers and leaves
- Corn — Natural trellis and afternoon shade in intense heat
- Dill — Attracts parasitic wasps that control caterpillar pests
❌ Keep away from
PotatoSage
🛡️ Pest & disease prevention
Proactive ways to stop trouble before it starts — tap a name with an arrow for its full guide
Row cover until large; kaolin clay spray; yellow sticky traps
Space well for airflow on trellis; neem oil or potassium bicarbonate spray
Overhead misting in heat; neem oil every 7 days
Avoid overhead watering; remove infected leaves; copper spray
🌾 Harvest & storage
Best harvested at 12 to 15 inches while still firm and bright green. At this size, flesh is crisp and seeds are small. Overripe fruits over 18 inches become seedy and spongy. Pick every 2 to 3 days. Skin is thin and fully edible. No need to peel. Refrigerate and use within 5 days.
🥗 Nutrition & benefits
Very low in calories; high water content keeps you hydrated. Provides vitamin K and potassium. The thin edible skin adds a little fiber.
For educational and informational purposes only — HomeSown is not medical, health, or other professional advice. Always positively identify any plant before handling or eating it; some plants, and some parts of otherwise-edible plants, are toxic. Consult a qualified professional before consuming or otherwise using any plant, especially if you are pregnant, nursing, taking medication, or have a health condition.