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When to Plant Rue in Sandy, UT

Salt Lake County, Utah Zone 7b July

Top priorities for Salt Lake County, Utah gardeners in July

July is a pivotal month for Salt Lake County, Utah gardens. Focus on these tasks first and you'll set up the rest of the season for success.

Avg. last frost May 6
Avg. first frost October 10
Soil temp (4") 68°F
Watering Critical
Pest pressure High
Daylight 14.6 hrs
  1. It's harvest week for rue

    Morning harvests are best — cooler temperatures mean crisper produce and longer fridge life.

A few tasks this July that'll pay off in August
  • First harvests: rue

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Rue is a bitter, aromatic perennial herb with bluish-green foliage used historically in medicine and as a pest deterrent. Handle with care as its sap can cause skin irritation.

Sandy, Utah is in USDA Zone 7b. The average last spring frost is May 6 and the first fall frost is October 10, giving you a growing season of approximately 157 days.

At an elevation of 4,960 feet, Salt Lake County receives approximately 12.2 inches of rainfall annually with predominantly loam soil. Summer highs average 88°F, providing good warmth for Rue during the growing season. With low rainfall, drip irrigation is essential for growing Rue successfully. Mulch heavily to conserve soil moisture.

Sandy, UT (Zone 7b) Moderate season
157 days
Last Spring Frost May 6
157 growing days
First Fall Frost October 10

Sandy Soil Profile

Soil Type

Loam

Soil pH

6.7-8.3

Drainage

Well Drained

Rue Planting Risk Windows

Early Start (70% safe) ✓ Fits season (16 days to spare)
Transplant: May 3 🍅 Harvest: Jul 12 – Sep 13
Recommended (50%) ✓ Fits season (17 days to spare)
Transplant: May 13 🍅 Harvest: Jul 22 – Sep 23
Safe Start (90%) ✓ Fits season (1 days to spare)
Transplant: Jun 17 🍅 Harvest: Aug 26 – Oct 28

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 Sandy

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

Soil pH

Your soil pH (6.7–8.3) overlaps with Rue's range (6.0–7.5), though not a perfect match.

Soil Texture

The loam soil in Salt Lake County is excellent for Rue — good drainage, moisture retention, and nutrient holding capacity.

Organic Matter

Organic matter is moderate (2.6%). Annual compost additions will help Rue.

How to Plant Rue

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

Succession Planting Rue

2
successive plantings in your 157-day season

Sow every 8 weeks. Last sowing by Jul 12 to harvest before frost.

Rue Water Budget

Plant needs
0.5″/week
Rainfall provides
0.3″/week
You supply
0.2″/week
Watering frequency Only during dry spells
Season total 291 gal / 100 sq ft
Drought risk

Water stress score is 6/10 — consider drought-tolerant varieties and mulching

Monthly Watering Guide for Rue

Rue needs approximately 0.5 inches of water per week (2.2" per month). Here's how your county's rainfall compares month by month.

Month Rue Needs Rainfall You Supplement Action
Jan 0.9" 0" ❄️ Dormant
Feb 0.6" 0" ❄️ Dormant
Mar 1.1" 0" ❄️ Dormant
Apr 1.2" 0" ❄️ Dormant
May 2.2" 1.4" 0.8" 💧 Light watering
Jun 2.2" 1" 1.2" 🚿 Regular watering
Jul 2.2" 1.1" 1.1" 🚿 Regular watering
Aug 2.2" 1.4" 0.8" 💧 Light watering
Sep 2.2" 0.9" 1.3" 🚿 Regular watering
Oct 2.2" 1.2" 1" 💧 Light watering
Nov 0.8" 0" ❄️ Dormant
Dec 0.7" 0" ❄️ Dormant

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

Rue 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.

Rue needs ~1,280 GDD — county provides 2,512 GDD Excellent fit

Rue Planting Timeline — Sandy, UT

Rue Planting Calendar

Activity When Date Range
Transplant Outdoors May 13 May 13 – May 27
Harvest July 22 Jul 22 – Sep 23

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

Month-by-Month Timeline

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

Growing Conditions

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

0.5"/week · Only during dry spells

📅 Days to Maturity

70–90 days

🧪 Soil pH

Needs 6–7.5 · Your soil: acceptable

🗺️ USDA Zone

Zone 7b

📆 Growing Season

157 days in Salt Lake County

Growing Tips for Rue in Sandy

Direct sow Rue outdoors after May 06 in Salt Lake County when soil has warmed and frost danger has passed.

Salt Lake County receives only 12" of rain annually. Rue needs consistent moisture — install drip irrigation or water deeply 2-3 times per week.

General growing tips

Start seeds indoors or direct sow. Plant in well-drained soil. Wear gloves when handling as sap can cause phytophotodermatitis. Prune in early spring.

Companion Planting

Good Companions

Avoid Planting Near

  • Basil
  • Sage

Check more plant combinations with our Companion Planting Checker →

🌱

Your Salt Lake County Garden Planner — Free

A 22-page printable planner built for Salt Lake County (Zone 7b). 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 Salt Lake County, UT. Local conditions may vary. Last updated: July 2026.