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Growing Parsley in Knoxville

🇺🇸 Zone 5 Planting Guide · Humid subtropical climate

USDA Zone 5 215 frost-free days 70-90 days to harvest

Quick Answer: Growing Parsley in Knoxville

Yes, you can grow Parsley 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 Parsley takes 70-90 days to harvest. Parsley needs full sun to partial shade and regular watering.

Climate Match Analysis

Moderate Match Knoxville + Parsley

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

Parsley tolerates -5°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

Parsley Planting Calendar for Knoxville

Green months show the best time to plant Parsley in Knoxville

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

Parsley Growing Requirements

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Sunlight

Full Sun to Partial Shade

2-4 hours direct sunlight

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Water

Regular

Consistent moisture, 1-2 inches/week

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Days to Harvest

70-90

From planting to first harvest

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Difficulty

medium

Some experience helpful

💡 Growing Tips for Parsley

Slow to germinate (2-4 weeks). Soak seeds overnight to speed up. 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: Parsley is frost tolerant — you can plant earlier in spring.

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Companion Plants for Parsley

Find out which plants grow best alongside Parsley — and which to keep apart

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Grow Parsley Indoors

No garden? Learn how to grow Parsley indoors with our complete guide

How to Grow Parsley 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. Parsley grows well with some gardening knowledge in this climate.

Parsley 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 Parsley are February, March, April, August, September. Since Parsley can tolerate frost, you have flexibility to plant earlier in the season or extend into cooler months. Expect to harvest in approximately 70-90 days after planting.

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

Other Plants That Grow in Knoxville

More plants you can grow alongside Parsley in Knoxville

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Frequently Asked Questions

Can I grow parsley in Knoxville?

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

When should I plant parsley in Knoxville?

In Knoxville, the recommended planting months for Parsley 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. Parsley is frost tolerant, giving you more flexibility with planting dates.

How long does parsley take to grow in Knoxville?

Parsley typically takes 70-90 days from planting to harvest. In Knoxville's Humid subtropical climate with 215 frost-free days, you have plenty of time to grow Parsley to maturity. Slow to germinate (2-4 weeks). Soak seeds overnight to speed up. 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 parsley indoors in Knoxville?

Parsley 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 parsley in Knoxville?

Plant Parsley 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 parsley hard to grow in Knoxville?

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

What grows well with parsley in Knoxville?

In Knoxville, you can grow many companion plants alongside Parsley. 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 parsley need full sun in Knoxville?

Parsley requires full sun to partial shade. Parsley 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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