10 Heirloom Vegetables to Grow: Best Heritage Garden Guide

6. Russian Mammoth Sunflowers: A Giant Among Heirlooms

Historical Legacy

The Russian Mammoth Sunflower has been cultivated since the 1800s, originally brought to America by Russian immigrants. These gentle giants of the garden have been a staple in traditional farming communities for generations, prized for both their ornamental value and practical uses.

Growing Requirements

Plant in full sun locations with well-draining, nutrient-rich soil
Space seeds 6-8 inches apart in rows 3 feet apart
Soil pH should be between 6.0 and 7.5
Requires regular deep watering, especially during flowering stage
Add compost or aged manure before planting for optimal growth

Support and Maintenance

To support these towering beauties that can reach 12-15 feet tall:

Install sturdy stakes when plants reach 3 feet
Use soft garden twine to secure stems
Consider creating a windbreak in exposed areas
Monitor for stem strength as heads develop
Provide additional support during seed formation

Harvesting and Storage

Follow these steps for successful seed harvesting:

Wait until heads turn brown and dry
Check for mature seeds by removing a few
Cut heads with 1-2 feet of stem attached
Hang upside down in a warm, dry location
Store dried seeds in airtight containers

Wildlife and Garden Benefits

These magnificent plants offer multiple benefits:

Attract beneficial pollinators to your garden
Provide natural bird feeding stations in fall
Create shade for heat-sensitive plants
Serve as natural trellises for climbing plants
Support local butterfly and bee populations

Ready to discover another amazing heirloom variety? Click “next” to learn about the enchanting Moon and Stars Watermelon, with its celestial-patterned rind and sweet, juicy flesh that makes it a true garden treasure!