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When to Plant Guava in Yuba County, CA

Yuba County, California Zone 9b May

This month in Yuba County, California

May is a pivotal month for Yuba County, California gardens. Focus on these tasks first and you'll set up the rest of the season for success.

Avg. last frost April 22
Avg. first frost November 9
Soil temp (4") 75°F
Watering Critical
Pest pressure High
Daylight 14.2 hrs
  1. Get guava in the ground

    Pick a cloudy afternoon or evening to plant. Less transplant shock, and your seedlings will barely blink.

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Guava is a tropical fruit tree producing fragrant, vitamin C-rich fruits with pink, white, or yellow flesh. Some varieties can tolerate brief cold snaps.

Yuba County, California is in USDA Zone 9b. The average last spring frost is April 22 and the first fall frost is November 9, giving you a growing season of approximately 201 days.

At an elevation of 303 feet, Yuba County receives approximately 26.5 inches of rainfall annually with predominantly loam soil. Summer highs average 94°F, providing good warmth for Guava during the growing season.

Yuba County, CA (Zone 9b) Long season
201 days
Last Spring Frost April 22
201 growing days
First Fall Frost November 9
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Yuba County Soil Profile

Soil Type

Loam

Soil pH

6.3-7.3

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season
Transplant: Apr 28
Recommended (50%) ✓ Fits season
Transplant: May 6
Safe Start (90%) ✓ Fits season
Transplant: Jun 11

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 Yuba County

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

Soil pH

Your soil pH (6.3–7.3) overlaps with Guava's range (5.0–7.0), though not a perfect match.

Soil Texture

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

Organic Matter

Organic matter is moderate (2.5%). Annual compost additions will help Guava.

How to Plant Guava

36"
Between Plants
48"
Between Rows

Plant Water Budget

Plant needs
1.0″/week
Rainfall provides
0.6″/week
You supply
0.5″/week
Watering frequency 1-2 times/week
Season total 958 gal / 100 sq ft
Drought risk

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

Monthly Watering Guide for Guava

Guava needs approximately 1 inches of water per week (4.3" per month). Here's how your county's rainfall compares month by month.

Month Guava Needs Rainfall You Supplement Action
Jan 4.9" 0" ❄️ Dormant
Feb 5.6" 0" ❄️ Dormant
Mar 4.6" 0" ❄️ Dormant
Apr 4.3" 2.2" 2.1" 💧 Light watering
May 4.3" 0.7" 3.6" 🚿 Regular watering
Jun 4.3" 0.2" 4.1" 🚿 Regular watering
Jul 4.3" 0" 4.3" 🚿 Regular watering
Aug 4.3" 0" 4.3" 🚿 Regular watering
Sep 4.3" 0.3" 4" 🚿 Regular watering
Oct 4.3" 1.1" 3.2" 🚿 Regular watering
Nov 4.3" 2.8" 1.5" 💧 Light watering
Dec 4.1" 0" ❄️ Dormant

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

Guava 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.

Guava needs ~11,224 GDD — county provides 4,120 GDD May not mature

Guava Planting Timeline — Yuba County, CA

Guava Planting Calendar

Activity When Date Range
Transplant Outdoors May 6 May 6 – May 20

· 36" apart · Rows 48" apart

Month-by-Month Timeline

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

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

1"/week · 1-2 times/week

📅 Days to Maturity

365–730 days

🧪 Soil pH

Needs 5–7 · Your soil: acceptable

🗺️ USDA Zone

Zone 9b

📆 Growing Season

201 days in Yuba County

Growing Tips for Guava in Yuba County

Direct sow Guava outdoors after April 22 in Yuba County when soil has warmed and frost danger has passed.

Your 201.0-day growing season in Yuba County is tight for Guava (365.0-730.0 days to maturity). Start indoors and choose early-maturing varieties.

General growing tips

Plant in a sheltered location with full sun. Water regularly during fruiting. In marginal zones, grow in large containers. Prune to maintain size and shape. Fruits ripen year-round in the tropics.

Companion Planting

Good Companions

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Guava in Yuba County, CA?

Yuba County is in Zone 9b with an average last frost of April 22. Plan your Guava planting based on this frost date — see the calendar above for exact timing.

What planting zone is Yuba County, CA?

Yuba County, California is in USDA Hardiness Zone 9b. The average last spring frost is April 22 and first fall frost is November 9.

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Your Yuba County Garden Planner — Free

A 24-page printable planner built for Yuba 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 Yuba County, CA. Local conditions may vary. Last updated: May 2026.

Sources & credits

Every number on this page traces back to a primary horticulture or government data source. Click through to verify.