When to Plant Shiso in Morrill County, NE
Shiso (perilla) is a fragrant Japanese herb with large, ruffled leaves in green or purple varieties. It has a unique flavor combining mint, basil, and anise.
Morrill County, Nebraska is in USDA Zone 5a. The average last spring frost is May 11 and the first fall frost is October 3, giving you a growing season of approximately 145 days.
At an elevation of 1,112 feet, Morrill County receives approximately 34.5 inches of rainfall annually with predominantly loam soil. Summer highs average 83°F, so choose short-season varieties of Shiso to ensure they mature before fall.
Morrill County Soil Profile
Soil Type
Loam
Soil pH
6.0-7.0
Drainage
Well Drained
Shiso Planting Timeline — Morrill County, NE
Shiso Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Start Indoors | March 23 | Mar 23 – Apr 6 |
| Transplant Outdoors | May 25 | May 25 – Jun 8 |
| Direct Sow | May 18 | May 18 – Jun 8 |
| Harvest | July 20 | Jul 20 – Sep 14 |
Plant 0.5" deep · 8" apart · Rows 12" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| January | — |
| February | — |
| March | Start Indoors |
| April | Start Indoors |
| May | Transplant Outdoors Direct Sow |
| June | Transplant Outdoors Direct Sow |
| July | Harvest |
| August | Harvest |
| September | Harvest |
| October | — |
| November | — |
| December | — |
Growing Conditions
☀️ Sun
Partial Shade (3-6 hours)
💧 Water
Moderate — regular watering
📅 Days to Maturity
50–70 days
🧪 Soil pH
Needs 5.5–7 · Your soil: N/A
🗺️ USDA Zone
Zone 5a
📆 Growing Season
145 days in Morrill County
Growing Tips for Morrill County
Direct sow after last frost or start indoors. Both green and red varieties are available. Pinch tips to encourage bushiness. Self-sows prolifically; deadhead to control.
Companion Planting
Good Companions
Check more plant combinations with our Companion Planting Checker →
Shiso in Other Locations
Frequently Asked Questions
When should I plant Shiso in Morrill County, NE?
Morrill County is in Zone 5a with an average last frost of May 11. Plan your Shiso planting based on this frost date — see the calendar above for exact timing.
What planting zone is Morrill County, NE?
Morrill County, Nebraska is in USDA Hardiness Zone 5a. The average last spring frost is May 11 and first fall frost is October 3.
Your Morrill County Garden Planner — Free
A 22-page printable planner built for Morrill County (Zone 5a). Planting dates, a month-by-month schedule, harvest log, seed inventory, and succession charts — all dialed in for your exact growing season.