When to plant swiss chard in Brownsville
Swiss chard is cold-hardy, so every date keys off Brownsville's frost dates.
Step 1 · Sow
Direct sow outdoors
Jan 8 – Jan 29
Sow straight into warm, workable soil.
Step 2 · Harvest
Harvest window
Feb 27 – Mar 9
Picking runs until conditions turn against the crop.
Window
Days to maturity
50 – 60 d
From sowing to first pick.
Common questions
When can I sow swiss chard outdoors in Brownsville?
Direct-sow around early January (Jan 8–Jan 29) in Brownsville, based on its local frost dates. Confidence 73%.
When will swiss chard be ready to harvest in Brownsville?
Expect to harvest from around late February (Feb 27–Mar 9) in Brownsville, based on its local frost dates. Confidence 68%.
How long is the growing season in Brownsville?
Brownsville has roughly 365 frost-free days, which is enough time to grow swiss chard to maturity outdoors.
The rule of thumb
Sow swiss chard 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 Brownsville's frost dates.
Confidence 75/100 · Curated · based on NOAA GHCN-Daily 1991–2020 normal · frost dates are probabilities, not guarantees.