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When to plant Mint in Proberta,

Plant Mint in Proberta during the brief March 13–March 27 window. With 267 frost-free days, fall plantings can't mature before November 28.

When to Plant Mint in Proberta, CA

Mint
Proberta, CA Zone 9b June

Proberta, CA gardeners: here's your June plan

Your garden in Proberta, CA is working on a schedule, even when you're not. Here's where you should be this June.

Avg. last frost March 6
Avg. first frost November 28
Soil temp (4") 81°F
Watering Critical
Pest pressure High
Daylight 14.8 hrs
  1. Collect mint at their peak

    Don't tug. Use scissors or pruners for clean cuts — torn stems invite disease.

Before July arrives, get these ready
  • First harvests: mint

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Mint is a vigorous perennial herb with refreshing, aromatic leaves used in teas, cocktails, and cooking. It spreads aggressively by underground runners.

Proberta, California is in USDA Zone 9b. The average last spring frost is March 6 and the first fall frost is November 28, giving you a growing season of approximately 267 days.

At an elevation of 78 feet, Tehama County receives approximately 44 inches of rainfall annually with predominantly loam soil. Summer highs average 82°F, so choose short-season varieties of Mint to ensure they mature before fall.

Proberta, CA (Zone 9b) Long season
267 days
Last Spring Frost March 6
267 growing days
First Fall Frost November 28
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Proberta Soil Profile

Soil Type

Loam

Soil pH

6.8-7.6

Drainage

Well Drained

Mint Planting Risk Windows

Early Start (70% safe) ✓ Fits season (130 days to spare)
Transplant: Mar 2 🍅 Harvest: May 4 – Jul 13
Recommended (50%) ✓ Fits season (127 days to spare)
Transplant: Mar 13 🍅 Harvest: May 15 – Jul 24
Safe Start (90%) ✓ Fits season (105 days to spare)
Transplant: Apr 25 🍅 Harvest: Jun 27 – Sep 5

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.

Soil Compatibility in Proberta

How your county's soil matches Mint's growing requirements.

Soil pH

Your soil pH (6.8–7.6) is more alkaline than Mint prefers (6.0–7.0). Add sulfur or peat moss to lower pH.

Soil Texture

The loam soil in Tehama County is excellent for Mint — good drainage, moisture retention, and nutrient holding capacity.

Organic Matter

Organic matter is moderate (2.9%). Annual compost additions will help Mint.

How to Plant Mint

0.5"
Planting Depth
8"
Between Plants
12"
Between Rows

Succession Planting Mint

5
successive plantings in your 267-day season

Sow every 6.9 weeks. Last sowing by Aug 30 to harvest before frost.

Mint Water Budget

Plant needs
0.7″/week
Rainfall provides
0.7″/week
You supply
0.0″/week
Watering frequency Only during dry spells
Season total 22 gal / 100 sq ft
Drought risk

Water stress score is 8/10 — consider drought-tolerant varieties and mulching

Monthly Watering Guide for Mint

Mint needs approximately 0.7 inches of water per week (3" per month). Here's how your county's rainfall compares month by month.

Month Mint Needs Rainfall You Supplement Action
Jan 10.2" 0" ❄️ Dormant
Feb 8.5" 0" ❄️ Dormant
Mar 3" 7" 0" ✅ Rainfall sufficient
Apr 3" 3.5" 0" ✅ Rainfall sufficient
May 3" 1.3" 1.7" 🚿 Regular watering
Jun 3" 0.2" 2.8" 🚿 Regular watering
Jul 3" 0" 3" 🚿 Regular watering
Aug 3" 0" 3" 🚿 Regular watering
Sep 3" 0.4" 2.6" 🚿 Regular watering
Oct 3" 1.8" 1.2" 💧 Light watering
Nov 3" 4.2" 0" ✅ Rainfall sufficient
Dec 6.9" 0" ❄️ Dormant

Water needs are for active growing months only (Mar–Nov in Tehama County). Supplement amounts are based on average rainfall — actual needs vary with temperature, soil, and mulching.

Mint Heat Requirements (GDD)

What are Growing Degree Days (GDD)?

Growing Degree Days measure the total warmth your plants receive during the growing season. Think of it as a "heat bank" — every day above 50°F deposits warmth that helps your plants grow.

Each plant needs a certain amount of accumulated heat to mature. If your county provides more GDD than the plant needs, it's a great fit. If it's close, you may want to choose faster-maturing varieties or start seeds indoors to get a head start.

Mint needs ~862 GDD — county provides 3,070 GDD Excellent fit

Mint Planting Timeline — Proberta, CA

Mint Planting Calendar

Activity When Date Range
Transplant Outdoors March 13 Mar 13 – Mar 27
Harvest May 15 May 15 – Jul 24

Plant 0.5" deep · 8" apart · Rows 12" apart

Month-by-Month Timeline

MonthActivities
January
February
March Transplant Outdoors
April
May Harvest
June Harvest
July Harvest
August
September
October
November
December
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Growing Conditions

☀️ Sun

Partial Shade (3-6 hours)

💧 Water

0.7"/week · Only during dry spells

📅 Days to Maturity

60–90 days

🧪 Soil pH

Needs 6–7 · Your soil: too_alkaline

🗺️ USDA Zone

Zone 9b

📆 Growing Season

267 days in Tehama County

Growing Tips for Mint in Proberta

Direct sow Mint outdoors after March 06 in Tehama County when soil has warmed and frost danger has passed.

General growing tips

Always grow mint in containers or with underground barriers to control spreading. Harvest regularly to keep plants compact. Cut plants back in late summer for a fresh fall flush.

Companion Planting

Good Companions

Avoid Planting Near

  • Parsley

Check more plant combinations with our Companion Planting Checker →

When should I plant Mint in Proberta, ?

In Proberta, , plant Mint after the last frost (around March 6) and before the first frost (around November 28). Best results when soil holds above 50°F.

What growing zone is Proberta, for Mint?

Proberta sits in USDA Zone 9b. Mint grows reliably in zones 3a through 10b, so it's a good fit here.

Can Mint grow in Proberta's climate?

Yes — Mint grows well in Proberta's temperate climate. Proberta averages a 267-day frost-free season, with last frost around March 6 and first frost around November 28.

🌱

Your Tehama County Garden Planner — Free

A 22-page printable planner built for Tehama County (Zone 9b). Planting dates, a month-by-month schedule, harvest log, seed inventory, and succession charts — all dialed in for your exact growing season.

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Data sources: USDA Plant Hardiness Zone Map (2023), NOAA 30-Year Climate Normals. Frost dates are based on 50% probability averages for Tehama County, CA. Local conditions may vary. Last updated: June 2026.