Zone 5 · Fruiting Veg Growing Guide

When to Plant Eggplant / Aubergine
in Zone 5

Heat-loving crop that needs a long warm season. Start early indoors with bottom heat — slow to germinate and slow to establish. Rewards patience with beautiful glossy fruit.

Plant outdoors
May 20 – Jun 5
Start indoors
Mar 20 – Apr 5
Last Frost
~Apr 15
Days to harvest
70–85 days
Difficulty
Medium
Start indoors — Zone 5
Harvest window: Aug – Oct

Planting Calendar

In Zone 5, Eggplant / Aubergine should be planted outdoors May 20 – Jun 5, after the average last frost date of approximately Apr 15. Start seeds indoors around Mar 20 – Apr 5 for a head start.

Needs warmth. Plant after soil reaches 60°F. Consistent watering prevents bitter fruit.

Care Guide

Sunlight
Full sun · 6–8 hrs/day
Watering
Regular
Spacing
18–24 inches
Soil
Rich, well-draining, warm
Days to maturity
70–85 days
Soil pH
5.8–6.5
plant tip · Zone 5

Needs warmth. Plant after soil reaches 60°F. Consistent watering prevents bitter fruit.

Feeding Schedule

How often
every 2 weeks
Feed type
balanced then high potassium
Key timing
switch to high-potassium at first flower

Heavy feeder like peppers and tomatoes. Start with balanced feed, switch to high-potassium when flowers appear. Consistent feeding produces larger, more tender fruit.

Companion Planting for Eggplant / Aubergine

What you plant next to eggplant / aubergine makes a real difference — some plants actively help, others compete or attract pests.

Grows well with
  • Beans
  • Peppers
  • Tarragon
  • Marigolds
Keep away from
  • Fennel
  • Corn
  • Brassicas

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Common questions

In Zone 5, start eggplant / aubergine seeds indoors around Mar 20 – Apr 5, then transplant outdoors May 20 – Jun 5 after your last frost around Apr 15. Needs warmth. Plant after soil reaches 60°F. Consistent watering prevents bitter fruit.
Zone 5 has an average last spring frost of approximately Apr 15 and a first fall frost around Oct 15. These dates vary by specific location — use your ZIP code in the plant app for precision based on the nearest NOAA weather station.
Good companion crops for eggplant / aubergine include Beans, Peppers, Tarragon, Marigolds. Avoid planting near Fennel, Corn, Brassicas, which can compete for nutrients or attract pests.
Eggplant / Aubergine typically takes 70–85 days from transplant or direct sow to harvest in Zone 5. Expected harvest window: Aug – Oct.

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Eggplant / Aubergine in other zones
Crop Guides