When to plant cilantro / coriander in Knoxville
Cilantro / Coriander is cold-hardy, so every date keys off Knoxville's frost dates of Apr 8.
Step 1 · Sow
Direct sow outdoors
Mar 25 – Apr 15
Sow straight into warm, workable soil.
Step 2 · Harvest
Harvest window
May 9 – Jun 3
Picking runs until conditions turn against the crop.
Step 3 · Second sowing
Autumn / second sowing
Jul 18 – Aug 1
A second window for a fall crop, timed to mature before the first frost.
Step 4 · Second harvest
Autumn crop harvest
Sep 8 – Oct 3
Maturity window for the second sowing.
Window
Days to maturity
45 – 70 d
Knoxville's 201-day season leaves this much room.
Cilantro / Coriander on Knoxville's growing year
Frost-bounded season with crops mapped onto the 12-month axis.
Frost risk Growing Harvest
JAN
FEB
MAR
APR
MAY
JUN
JUL
AUG
SEP
OCT
NOV
DEC
FROST
FROST
APR 8
OCT 28
Common questions
When can I sow cilantro / coriander outdoors in Knoxville?
Direct-sow around late March (Mar 25–Apr 15) in Knoxville, based on its local frost dates. Confidence 89%.
When will cilantro / coriander be ready to harvest in Knoxville?
Expect to harvest from around early May (May 9–Jun 3) in Knoxville, based on its local frost dates. Confidence 80%.
Can I plant cilantro / coriander in autumn in Knoxville?
Yes — Knoxville supports a second, autumn sowing of cilantro / coriander around mid July (Jul 18–Aug 1), timed to mature before the first fall frost.
How long is the growing season in Knoxville?
Knoxville has roughly 201 frost-free days, which is enough time to grow cilantro / coriander to maturity outdoors.
The rule of thumb
Sow cilantro / coriander as soon as the soil is workable — it tolerates cool weather and light frost. Every date on this page is derived from that rule and Knoxville's frost dates.
Confidence 89/100 · Curated · based on NOAA GHCN-Daily 1991–2020 normal · frost dates are probabilities, not guarantees.