Flowers · Growing Guide

How to Grow Skyscraper Sunflower

A practical growing guide for Sunflower Seeds - Skyscraper, written for gardeners in California's Sierra foothills. Expect first harvest in around 90–110 days from sowing.

At a glance

Sun

Full sun (6+ hrs)

Soil

Average, well-draining

Planting depth

1/4 inch

Spacing

12–24 in apart

Days to germinate

7–14 days

Days to maturity

90–110 days

Watering

Moderate; established plants are drought-tolerant.

When to plant

Direct sow after last frost. Some self-sow year to year.

Harvest

Heads droop and back turns yellow-brown when seeds are ripe.

Amador tip

Grows 12+ ft; stake in our windy spring storms.

Why grow your own

Growing skyscraper sunflower from seed is one of the most rewarding ways to skip the pesticide-treated, ultra-shipped produce in conventional grocery stores. You control the soil, the water, and the timing, and at the end of the season you can save seed to plant again next year. That's how gardens used to work.

Our packets are naturally sourced, non-GMO, and hand-packed here in Amador County so they arrive ready to plant.

Sources & further reading

These growing recommendations are compiled from publicly available, university-extension and trusted horticultural references. Verify any guidance against your own local conditions.