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Growing Sorrel in Knoxville

🇺🇸 Zone 5 Planting Guide · Humid subtropical climate

USDA Zone 5 215 frost-free days 40-60 days to harvest

Quick Answer: Growing Sorrel in Knoxville

Yes, you can grow Sorrel in Knoxville, US! Plant during Feb, Mar, Apr, Aug, Sep for best results. Knoxville is in USDA Zone 5 with a Humid subtropical climate, offering 215 frost-free days per year. The difficulty level is medium, and Sorrel takes 40-60 days to harvest. Sorrel needs full sun to partial shade and regular watering.

Climate Match Analysis

Moderate Match Knoxville + Sorrel

Knoxville's climate requires careful timing. Summer highs (31°C) exceed Sorrel's maximum (28°C), so plant early or provide shade. Follow the recommended planting months for success.

Sorrel tolerates -15°C to 28°C
Optimal: 10°C - 22°C
Knoxville range -2°C to 31°C

Knoxville Climate Data

USDA Zone
5
Frost-Free
215days
Winter Low
-2°C
Summer High
31°C
Rainfall
1245mm/yr
Climate
Cfa
Humid subtropical

Sorrel Planting Calendar for Knoxville

Green months show the best time to plant Sorrel in Knoxville

Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Plant Sorrel Not recommended

Sorrel Growing Requirements

☀️

Sunlight

Full Sun to Partial Shade

2-4 hours direct sunlight

💧

Water

Regular

Consistent moisture, 1-2 inches/week

📅

Days to Harvest

40-60

From planting to first harvest

📊

Difficulty

medium

Some experience helpful

💡 Growing Tips for Sorrel

Perennial that returns yearly. Remove flower stalks to prolong leaf harvest. Can be planted 2-3 weeks before the last expected frost, giving it a head start on the growing season. Aim for about 2.5 cm of water per week, adjusting for rainfall. Organic mulch around the base helps maintain even moisture.

Frost tolerance: Sorrel is frost tolerant — you can plant earlier in spring.

How to Grow Sorrel in Knoxville

Knoxville, US is in USDA Hardiness Zone 5 with a Humid subtropical climate (Köppen Cfa). With winter lows of -2°C and summer highs of 31°C, the growing season spans approximately 215 frost-free days. Sorrel grows well with some gardening knowledge in this climate.

Sorrel thrives in temperatures between 10°C and 22°C, requiring full sun to partial shade and regular watering. In Knoxville, the best months to plant Sorrel are February, March, April, August, September. Since Sorrel can tolerate frost, you have flexibility to plant earlier in the season or extend into cooler months. Expect to harvest in approximately 40-60 days after planting.

Knoxville receives 1245mm of annual rainfall, which provides good natural moisture for Sorrel. Supplement with additional watering during dry spells.

Other Plants That Grow in Knoxville

More plants you can grow alongside Sorrel in Knoxville

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Frequently Asked Questions

Can I grow sorrel in Knoxville?

Yes! Sorrel can be successfully grown in Knoxville, US. Knoxville is in USDA Hardiness Zone 5 with a Humid subtropical climate. The difficulty level for growing Sorrel here is rated "medium". The best months to plant are February, March, April, August, September.

When should I plant sorrel in Knoxville?

In Knoxville, the recommended planting months for Sorrel are February, March, April, August, September. Knoxville has 215 frost-free days per year, with winter lows of -2°C and summer highs of 31°C. Sorrel is frost tolerant, giving you more flexibility with planting dates.

How long does sorrel take to grow in Knoxville?

Sorrel typically takes 40-60 days from planting to harvest. In Knoxville's Humid subtropical climate with 215 frost-free days, you have plenty of time to grow Sorrel to maturity. Perennial that returns yearly. Remove flower stalks to prolong leaf harvest. Can be planted 2-3 weeks before the last expected frost, giving it a head start on the growing season. Aim for about 2.5 cm of water per week, adjusting for rainfall. Organic mulch around the base helps maintain even moisture.

Can I grow sorrel indoors in Knoxville?

Sorrel can potentially be grown indoors in Knoxville with proper conditions. It requires full sun to partial shade (2-4 hours of indirect light). Indoor growing extends your season beyond the Feb, Mar, Apr, Aug, Sep outdoor planting window. Use containers with good drainage and regular watering.

What month do I plant sorrel in Knoxville?

Plant Sorrel in Knoxville during February, March, April, August, September. These are the optimal months based on Knoxville's USDA Zone 5 climate, 215 frost-free days, and temperature range of -2°C to 31°C.

Is sorrel hard to grow in Knoxville?

Sorrel is rated "medium" to grow in Knoxville. Some gardening experience is helpful. Pay attention to watering schedules and planting timing. The climate match for Sorrel in Knoxville is Moderate.

What grows well with sorrel in Knoxville?

In Knoxville, you can grow many companion plants alongside Sorrel. Good options from the same planting window include Tomato, Basil, Lettuce, Carrot and 2 more. These plants share similar planting months and thrive in Knoxville's Zone 5 climate.

Does sorrel need full sun in Knoxville?

Sorrel requires full sun to partial shade. Sorrel tolerates lower light. In Knoxville, a spot with filtered or indirect light for 2-4 hours works well.

Last updated: March 2026 · Climate data from NOAA, FAO, USDA

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