Ornamental· Helianthus annuus

Sunflower (Ornamental) Growing Guide

Annual flower grown commercially for cut flower markets. Ornamental varieties are bred for multiple stems, varied colors, and pollen-free blooms to prevent staining. Distinct from oilseed sunflower.

How Long Does Sunflower (Ornamental) Take to Grow?

Sunflower (Ornamental) is typically ready to harvest about 55 days after planting.

Days to Harvest

moderate

Water Needs

full sun

Sun Needs

Growing Conditions

Temperature

18-30°C optimal

Rainfall

400-900 mm/year

Frost Tolerance

none

Drought Tolerance

moderate

Humidity

moderate tolerance

Heat Tolerance

high

Soil Requirements

Soil Type & pH

Best soil types: loam, sandy loam, clay loam

pH range: 6 - 7.5 (optimal: 6.8)

Drainage: good

Nutrient Needs (N-P-K)

Nitrogen (N)moderate

Phosphorus (P)moderate

Potassium (K)moderate

Planting Guide

Planting Methods

direct seeding

Planting Depth

2 cm

Plant Spacing

15 cm apart, 75 cm rows

Planting Season

spring, summer

Yield & Economics

Market Demand

growing

Profitability

medium

Harvests/Year

Common Pests & Diseases

Common Pests

sunflower moth
aphids
cutworms

Common Diseases

sclerotinia head rot
downy mildew
rust

Use AI crop disease detection to identify issues early and prevent crop losses.

Growing Tips

Succession plant every 10-14 days from spring through midsummer for continuous cut flower supply throughout the season.

Select pollenless (male-sterile) varieties for cut flower production — pollen-free blooms avoid staining clothes and furniture, commanding premium prices.

Harvest when ray petals are just beginning to lift off the disc; cut stems in the morning and place immediately in water with floral preservative.