Indigo Kumquat

Family: Solanaceae Nightshade

Planting Schedule

Provide your location or planting zone to unlock dates and add Indigo Kumquat to a garden.

Aromatic and richly sweet, Indigo Kumquat cherry tomatoes ripen to a mesmerizing inky plum with a warm, golden blush at the shoulders—like a jewel that catches the light.

The flesh is tender and juicy with a bright, tangy snap, delivering a concentrated burst of flavor in every bite. Grow Indigo Kumquat for fresh snacking, vibrant salads, and striking roasted or pan-simmered sauces where its dark color deepens beautifully as it cooks.

Light: Full SunMaturity: 60 DaysHabit: Indeterminate

Botanical illustration of Indigo Kumquat

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Indigo Kumquat 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	Apr 13th	Jul 27th	Sep 25th – Aug 1st
Zone 2a	Apr 6th	Jul 20th	Sep 18th – Aug 29th
Zone 2b	Mar 27th	Jul 10th	Sep 8th – Aug 25th
Zone 3a	Mar 27th	Jul 10th	Sep 8th – Sep 1st
Zone 3b	Mar 31st	Jul 14th	Sep 12th – Sep 21st
Zone 4a	Mar 27th	Jul 10th	Sep 8th – Sep 24th
Zone 4b	Mar 25th	Jul 8th	Sep 6th – Sep 27th
Zone 5a	Mar 20th	Jul 3rd	Sep 1st – Sep 30th
Zone 5b	Mar 16th	Jun 29th	Aug 28th – Oct 5th
Zone 6a	Mar 13th	Jun 26th	Aug 25th – Oct 10th
Zone 6b	Mar 7th	Jun 20th	Aug 19th – Oct 16th
Zone 7a	Mar 2nd	Jun 15th	Aug 14th – Oct 20th
Zone 7b	Feb 20th	Jun 5th	Aug 4th – Oct 28th
Zone 8a	Feb 11th	May 27th	Jul 26th – Nov 5th
Zone 8b	Feb 2nd	May 18th	Jul 17th – Nov 12th
Zone 9a	Jan 16th	May 1st	Jun 30th – Nov 26th
Zone 9b	Dec 22nd	Apr 6th	Jun 5th – 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	60
Sun Requirements	Full Sun
Growth Habit	Indeterminate
Support Needed	Cage
Planting Depth	Deep
Germination Temp (°F)	70
Min Soil Temp (°F)	60
Min Night Temp (°F)	50
Harden Off (days)	10

Culinary Notes

Chef's Note

Indigo Kumquat’s tender, high-juice cherry flesh turns glossy and sweet under heat while keeping a bright tang that won’t go dull. It’s a snack tomato that also cooks like a flavor bomb—short, hot treatment so the inky color deepens without losing the snap.

Best Uses

snack-eating and salad halving—its jewels stay tender and juicy
hot roasting or blistering—inky skins darken and the sugars caramelize fast
quick pan-simmer or fast sauce—use short heat to keep the tang snappy

Flavor Profile

sweet-tangy brightness with a crisp, juicy snap aromatic, slightly smoky/tomato-inky edge tender flesh that releases a lot of wet-sweet juice

Kitchen Pairings

burrata aged balsamic vinegar extra-virgin olive oil garlic white fish fresh mozzarella

Frequently Asked Questions

Why are my Indigo kumquat (Solanum lycopersicum) plants getting leaf spots or yellowing, and what should I do?

Indigo kumquat tomatoes (Solanum lycopersicum) commonly develop fungal leaf diseases like early blight, which shows as brown, concentric spots on older leaves. Remove and destroy infected leaves, water at the soil line (not overhead), and keep foliage dry by spacing plants for airflow. If new spots keep appearing, apply a labeled fungicide suitable for tomatoes and repeat according to the label interval.

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

During fruiting, keep soil evenly moist but not waterlogged: water when the top 1 inch of soil feels dry. Aim for deep watering that wets the root zone, since uneven moisture can trigger blossom-end rot and fruit cracking in tomatoes. In hot weather, this is often every 2–3 days, but adjust based on how quickly your soil dries.

How can I tell when Indigo kumquat tomatoes are ready to harvest?

Harvest when fruits are fully colored for the variety (dark/purple-red tones) and give slightly when gently squeezed. At this stage, the fruit should separate easily from the vine with minimal tugging. Letting them fully ripen on the plant also improves flavor and reduces uneven texture.