Yamato Sanjaku

Cucumber

Zone 8b Save Garden

Botanical illustration of Yamato Sanjaku

🌱 55d to harvest Vine

Crisp and cool from the first bite, Yamato Sanjaku delivers a bright, clean cucumber flavor with a delicately sweet snap and a li…

Crop Dates

Milestone	Date
Start Indoors	Mar 16th
Last Frost	Mar 23rd
Transplant / Sow Outdoors	Mar 30th
Harvest Begins	May 24th
Harvest Ends	Nov 12th

Crop Details

Trait	Value
Days to Maturity	55
Sun Requirements	Full Sun
Growth Habit	Vine
Support Needed	Trellis
Planting Depth	Normal
Germination Temp (°F)	70
Min Soil Temp (°F)	65
Min Night Temp (°F)	55
Harden Off (days)	10

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Moonsong Deep Orange Marigold

Red Gem Marigold

Frequently Asked Questions

What’s the most common cucumber disease problem for Cucumis sativus, and how can I prevent and treat it?

For Cucumis sativus, powdery mildew often shows up as white, dusty patches on leaves, especially after warm days and cooler nights. Start by watering at the base (not the foliage) and keep plants spaced for airflow; remove badly infected leaves early. If it appears, spray a labeled potassium bicarbonate or sulfur product according to the label and repeat as directed to protect new growth.

How often should I water Cucumis sativus during the main growing phase?

During active vine growth and while fruits are swelling (roughly weeks 3–7), keep soil evenly moist but not soggy—aim for about 1 inch of water per week, adjusted for heat and container size. Water deeply 1–3 times per week rather than frequent light sprinkles, and check moisture: the top 1 inch of soil should stay slightly damp. Inconsistent moisture can lead to bitter fruits and misshapen cucumbers, so avoid letting the bed dry out completely between waterings.

How do I know when Yamato Sanjaku (Cucumis sativus) is ready to harvest?

Harvest when fruits are firm and reach their expected mature size for your trellis (typically around 55 days from sowing for this type), usually while they’re still fairly slender and crisp. Look for a bright, evenly colored skin and harvest before seeds fully enlarge—overripe cucumbers become softer and seedier. Use scissors or pruning shears and cut the fruit with a short stem to avoid damaging the vine.

Crisp and cool from the first bite, Yamato Sanjaku delivers a bright, clean cucumber flavor with a delicately sweet snap and a lightly seedy, tender interior. Its long, slender fruit—finished with a glossy, dark green skin—stays crisp and refreshing as it matures in about 55 days, making it a standout for fresh slicing and vibrant Asian-style salads. Grow it for its elegant shape and dependable texture, ideal for quick pickling and bright, tangy sauces where a crisp bite is everything.

Sowing Tips

Transplant Conditions

Wait until soil reaches 65°F and nights stay above 55°F before moving outdoors. Harden off for 10 days first.

Direct Sow Preferred

Sensitive roots — does not transplant well. If starting indoors, use biodegradable pots and disturb roots as little as possible when moving outdoors.

Expert Note

For crisp, pickling-ready fruit, keep soil evenly moist and harvest frequently once they reach the desired size.