Siletz

Family: Solanaceae Vegetable

Planting Schedule

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Sun-warmed and richly aromatic, Siletz tomatoes ripen to a steady, classic red with a smooth, satin skin that feels satisfyingly substantial in the hand.

Their flesh is firm yet juicy, with a balanced, true-tomato flavor that shines in thick slices—ideal for showcasing on the plate. Grow Siletz for dependable, midseason harvests (about 65 days) and a slicing tomato you’ll reach for again and again in fresh salads and bold, spoonable sauces.

Light: Full SunMaturity: 65 DaysHabit: Determinate

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Siletz Planting Dates by USDA Zone

Estimated US hardiness-zone windows for sow, transplant, and harvest. Enter a US ZIP above for exact local dates, or open a zone below.

Zone	Start Indoors	Sow / Transplant	Harvest
Zone 1a	Protected Environment Only
Zone 1b	Protected Environment Only
Zone 2a	Apr 6th	Jul 20th	Sep 23rd – Aug 29th
Zone 2b	Mar 27th	Jul 10th	Sep 13th – Aug 25th
Zone 3a	Mar 27th	Jul 10th	Sep 13th – Sep 1st
Zone 3b	Mar 31st	Jul 14th	Sep 17th – Sep 21st
Zone 4a	Mar 27th	Jul 10th	Sep 13th – Sep 24th
Zone 4b	Mar 25th	Jul 8th	Sep 11th – Sep 27th
Zone 5a	Mar 20th	Jul 3rd	Sep 6th – Sep 30th
Zone 5b	Mar 16th	Jun 29th	Sep 2nd – Oct 5th
Zone 6a	Mar 13th	Jun 26th	Aug 30th – Oct 10th
Zone 6b	Mar 7th	Jun 20th	Aug 24th – Oct 16th
Zone 7a	Mar 2nd	Jun 15th	Aug 19th – Oct 20th
Zone 7b	Feb 20th	Jun 5th	Aug 9th – Oct 28th
Zone 8a	Feb 11th	May 27th	Jul 31st – Nov 5th
Zone 8b	Feb 2nd	May 18th	Jul 22nd – Nov 12th
Zone 9a	Jan 16th	May 1st	Jul 5th – Nov 26th
Zone 9b	Dec 22nd	Apr 6th	Jun 10th – Dec 9th
Zone 10a	Continuous Production
Zone 10b	Continuous Production
Zone 11a	Continuous Production
Zone 11b	Continuous Production
Zone 12a	Continuous Production
Zone 12b	Continuous Production
Zone 13a	Continuous Production
Zone 13b	Continuous Production

Crop Details

Trait	Value
Days to Maturity	65
Sun Requirements	Full Sun
Growth Habit	Determinate
Support Needed	Cage
Planting Depth	Deep
Germination Temp (°F)	70
Min Soil Temp (°F)	60
Min Night Temp (°F)	50
Harden Off (days)	9

Culinary Notes

Chef's Note

Siletz is a slicing tomato that stays composed—firm flesh, steady juiciness, and true acidity make it ideal for thick cuts that won’t collapse under a heavy hand. When cooked, it softens into spoonable goodness without turning watery, so it earns a spot in quick roasts and fast sauces.

Best Uses

thick slice plates with flaky salt for a juicy, non-mushy chew
quick pan-roasting and finishing with pan juices for a concentrated, spoonable topping
bold, spoonable tomato sauces where the texture stays upright instead of collapsing

Flavor Profile

balanced true-tomato flavor firm, juicy flesh with a smooth satin bite bright, clean acidity that doesn’t turn sharp

Kitchen Pairings

garlic black pepper olive oil mozzarella white fish

Frequently Asked Questions

What pest or disease problem is most common on Solanum lycopersicum (tomatoes) and how do I treat it at home?

In tomatoes, early blight (Alternaria) often shows up as dark, concentric rings on older leaves. Remove and discard the infected leaves, improve airflow with wider spacing, and water at the soil line (not the foliage). If new spots keep appearing, spray an appropriate labeled fungicide for tomatoes and reapply according to the label, especially after rainy or humid stretches.

How often should I water Siletz tomatoes during the main growing phase?

During active vegetative growth and fruit set, keep the root zone evenly moist—about 1–2 inches of water per week total, adjusted for rainfall and heat. Water deeply 1–3 times per week rather than frequent light watering, and stop when the soil stays evenly damp but not soggy. If you see cracking or blossom-end rot, it’s usually from inconsistent moisture—switch to a steady schedule.

How can I tell when Siletz tomatoes are ready to harvest?

Harvest when fruits are fully colored for the variety (green to mature color, usually red-orange depending on the cultivar) and give slightly when gently squeezed. They should detach easily from the vine with a light twist; if they resist, they likely need more time. For best flavor, pick in the morning and avoid leaving overripe fruits on the plant.