When to plant Rhubarb in Wayne County, MI
In Wayne County, Rhubarb is a single-season spring crop — there's no second fall window. Plant May 19–June 2 for an 365–730-day harvest, finishing well before the October 20 first frost.
When to Plant Rhubarb in Wayne County, MI
Rhubarb is a long-lived perennial vegetable grown for its tart, colorful stalks. Only the stalks are edible as the leaves contain toxic oxalic acid.
Wayne County, Michigan is in USDA Zone 6b. The average last spring frost is April 28 and the first fall frost is October 20, giving you a growing season of approximately 175 days.
At an elevation of 1,066 feet, Wayne County receives approximately 34.1 inches of rainfall annually with predominantly silt loam soil. Summer highs average 91°F, providing good warmth for Rhubarb during the growing season.
Wayne County Soil Profile
Soil Type
Silt Loam
Soil pH
5.9-6.9
Drainage
Well Drained
Monthly Watering Guide for Rhubarb
Rhubarb needs approximately 1 inches of water per week (4.3" per month). Here's how your county's rainfall compares month by month.
| Month | Rhubarb Needs | Rainfall | You Supplement | Action |
|---|---|---|---|---|
| Jan | — | 1.4" | 0" | ❄️ Dormant |
| Feb | — | 1.5" | 0" | ❄️ Dormant |
| Mar | — | 2.4" | 0" | ❄️ Dormant |
| Apr | 4.3" | 3" | 1.3" | 💧 Light watering |
| May | 4.3" | 3.9" | 0.4" | 💧 Light watering |
| Jun | 4.3" | 4.4" | 0" | ✅ Rainfall sufficient |
| Jul | 4.3" | 4.3" | 0" | ✅ Rainfall sufficient |
| Aug | 4.3" | 3.4" | 0.9" | 💧 Light watering |
| Sep | 4.3" | 3" | 1.3" | 💧 Light watering |
| Oct | 4.3" | 2.6" | 1.7" | 💧 Light watering |
| Nov | — | 2.2" | 0" | ❄️ Dormant |
| Dec | — | 2" | 0" | ❄️ Dormant |
Water needs are for active growing months only (Apr–Oct in Wayne County). Supplement amounts are based on average rainfall — actual needs vary with temperature, soil, and mulching.
Rhubarb Planting Timeline — Wayne County, MI
Rhubarb Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Transplant Outdoors | May 19 | May 19 – Jun 2 |
Plant 1" deep · 30" apart · Rows 42" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| January | — |
| February | — |
| March | — |
| April | — |
| May | Transplant Outdoors |
| June | Transplant Outdoors |
| July | — |
| August | — |
| September | — |
| October | — |
| November | — |
| December | — |
Growing Conditions
☀️ Sun
Full Sun (6-8+ hours)
💧 Water
Moderate — regular watering
📅 Days to Maturity
365–730 days
🧪 Soil pH
Needs 6–7 · Your soil: N/A
🗺️ USDA Zone
Zone 6b
📆 Growing Season
175 days in Wayne County
Growing Tips for Wayne County
Plant crowns in early spring in rich, well-drained soil. Do not harvest stalks the first year. Pull (do not cut) stalks at harvest to avoid introducing rot.
Companion Planting
Good Companions
Check more plant combinations with our Companion Planting Checker →
Rhubarb in Other Locations
Frequently Asked Questions
When should I plant Rhubarb in Wayne County, MI?
Wayne County is in Zone 6b with an average last frost of April 28. Plan your Rhubarb planting based on this frost date — see the calendar above for exact timing.
What planting zone is Wayne County, MI?
Wayne County, Michigan is in USDA Hardiness Zone 6b. The average last spring frost is April 28 and first fall frost is October 20.
When should I plant Rhubarb in Wayne County, MI?
In Wayne County, MI, plant Rhubarb after the last frost (around April 28) and before the first frost (around October 20). Best results when soil holds above 50°F.
What growing zone is Wayne County, MI for Rhubarb?
Wayne County sits in USDA Zone 6b. Rhubarb grows reliably in zones 3a through 8b, so it's a good fit here.
Can Rhubarb grow in Wayne County's climate?
Yes — Rhubarb grows well in Wayne County's temperate climate. Wayne County averages a 175-day frost-free season, with last frost around April 28 and first frost around October 20.
Your Wayne County Garden Planner — Free
A 22-page printable planner built for Wayne County (Zone 6b). Planting dates, a month-by-month schedule, harvest log, seed inventory, and succession charts — all dialed in for your exact growing season.