When to Plant Borage in Ionia County, MI
Borage is a self-seeding annual herb with star-shaped blue flowers that attract pollinators. Its leaves have a cucumber-like flavor and the flowers are edible.
Ionia County, Michigan is in USDA Zone 5b. The average last spring frost is May 1 and the first fall frost is October 10, giving you a growing season of approximately 162 days.
At an elevation of 705 feet, Ionia County receives approximately 35.9 inches of rainfall annually with predominantly silt loam soil. Summer highs average 87°F, providing good warmth for Borage during the growing season.
Ionia County Soil Profile
Soil Type
Silt Loam
Soil pH
6.1-6.8
Drainage
Well Drained
Plant Planting Risk Windows
Percentages indicate frost risk at transplant. The 70% safe window means there is a 30% chance of frost after transplant — suitable for cold-hardy crops or gardeners with frost protection. The 90% safe window is best for tender plants.
Plant Water Budget
Water stress score is 6/10 — consider drought-tolerant varieties and mulching
Borage Planting Timeline — Ionia County, MI
Borage Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Start Indoors | March 27 | Mar 27 – Apr 10 |
| Transplant Outdoors | April 24 | Apr 24 – May 8 |
| Direct Sow | April 17 | Apr 17 – May 8 |
| Fall Sowing | August 1 | Aug 1 – Aug 15 |
| Harvest | June 19 | Jun 19 – Aug 7 |
Plant 0.5" deep · 8" apart · Rows 12" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| January | — |
| February | — |
| March | Start Indoors |
| April | Start Indoors Transplant Outdoors Direct Sow |
| May | Transplant Outdoors Direct Sow |
| June | Harvest |
| July | Harvest |
| August | Fall Sowing Harvest |
| September | — |
| October | — |
| November | — |
| December | — |
Growing Conditions
Sun
Full Sun (6-8+ hours)
Water
Low — drought tolerant
Days to Maturity
50–60 days
Soil pH
6 – 7
USDA Zone
Zone 5b
Growing Season
162 days
Growing Tips for Ionia County
Direct sow in spring as borage does not transplant well. Allow some plants to go to seed for next year. Young leaves are best; older leaves become bristly.
Companion Planting
Good Companions
Level Up Your Garden
Borage in Other Locations
Frequently Asked Questions
When should I plant Borage in Ionia County, MI?
Ionia County is in Zone 5b with an average last frost of May 1. Plan your Borage planting based on this frost date — see the calendar above for exact timing.
What planting zone is Ionia County, MI?
Ionia County, Michigan is in USDA Hardiness Zone 5b. The average last spring frost is May 1 and first fall frost is October 10.
Plan Your Garden with Confidence
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