Zone 10 · Microgreens Growing Guide

When to Plant Sunflower Sprouts
in Zone 10

The most substantial microgreen — thick, crunchy stems with mild nutty flavour. Soak black oil sunflower seeds 8–12 hours before sowing.

Plant outdoors
Indoors year-round
Start indoors
Direct sow
Last Frost
~Jan 15
Days to harvest
10–14 days
Difficulty
Easy
Ready to harvest — Zone 10
Harvest window: Year-round

Planting Calendar

In Zone 10, Sunflower Sprouts should be planted outdoors Indoors year-round, after the average last frost date of approximately Jan 15.

Soak seeds 8–12 hours. Harvest in 10–14 days.

Care Guide

Sunlight
Partial shade · 3–6 hrs/day
Watering
Regular
Spacing
N/A — container/substrate grown
Soil
Seed-starting mix or coco coir
Days to maturity
10–14 days
Soil pH
6.0–7.0
plant tip · Zone 10

Soak seeds 8–12 hours. Harvest in 10–14 days.

Feeding Schedule

How often
none needed
Feed type
none
Key timing
n/a

Harvested at sprout stage — no fertilizer needed. Water and light are all that's required.

Succession Planting

Sow every 1 weeks

Sow a new tray every week. Like all microgreens, each tray gives one harvest — continuous sowing is the only way to have a continuous supply.

Companion Planting for Sunflower Sprouts

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

Grows well with
    Keep away from

      These guides get better when growers like you contribute. If something’s wrong or you’ve learned something worth sharing, we’d love to hear it.

      What needs correcting?

      What should it say?

      Your zone (optional)

      Thanks — we'll review this and update the guide if needed.

      Your growing tip for Sunflower Sprouts

      Your name (optional)

      Your zone (optional)

      Tips are reviewed before publishing. Accepted tips earn you a Founding Grower badge when the plant app launches.

      Thanks for contributing! We'll review your tip and be in touch before launch.

      Common questions

      In Zone 10, direct sow sunflower sprouts outdoors Indoors year-round after your last frost date of approximately Jan 15. Soak seeds 8–12 hours. Harvest in 10–14 days.
      Zone 10 has an average last spring frost of approximately Jan 15 and a first fall frost around Dec 31. 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 sunflower sprouts include . Avoid planting near , which can compete for nutrients or attract pests.
      Sunflower Sprouts typically takes 10–14 days from transplant or direct sow to harvest in Zone 10. Expected harvest window: Year-round.

      Free app · iOS February 2028

      Track your Sunflower Sprouts in plant

      Get a live traffic light for every crop in your garden — zone-aware planting calendar, real-time weather alerts, and a community of growers near you.

      Be first to back on Kickstarter and lock in the founding price.

      Sunflower Sprouts in other zones
      Crop Guides