Exact county boundary
The public tool releases Harris County guidance only after Harris County is selected. If your garden is in another county—even elsewhere in the Houston metropolitan area—the Harris schedule is not substituted.
Texas · Harris County · reviewed local evidence
Harris County vegetable planting calendar
Review the seasonal date ranges published for Harris County without borrowing dates from a neighboring county, hardiness zone, or generic national chart. TerraEvidence keeps the local source, planting action, source classification and date limits attached to every range.
Coverage: Harris County, Texas only. Other counties remain unavailable until their own evidence packages pass review.
Reviewed public reference
This page describes the same validated Harris County records used by the interactive date reference.
TerraEvidence does not create a second set of dates for search pages. The interactive Harris County Planting Date Reference remains the single public interface for reviewing the source-published crop ranges by month, crop, or year.
Seasonal reference—not a planting recommendationCheck current weather and local conditions before planting.
Early or late freezes, unusual heat, rainfall, flooding, drought, soil conditions and local microclimates can make current conditions unsuitable even when a source-published seasonal range overlaps the month. TerraEvidence does not determine whether you should plant.
Why locality matters
The Harris County date reference is not a Texas-wide schedule.
Planting timing can shift with local heat, cold, rainfall patterns, soil conditions, crop type, and the source method used to describe the season. A hardiness zone is useful for some questions, but it does not replace a reviewed local vegetable planting calendar.
Seasonal guidance, not a weather guarantee
The reviewed windows describe source-backed seasonal timing. They do not guarantee that a particular day is safe from heat, cold, flooding, drought, pests, or other local conditions.
How to read the calendar
Keep favorability, planting action, and date precision separate.
Those details answer different questions and should not be collapsed into one label.
Source-classified preferred range
“Ideal” is the source chart’s classification for the more favorable portion of a crop’s seasonal range and planting action. TerraEvidence displays that classification; it does not turn it into a live-weather recommendation.
Source-classified less-favorable range
“Marginal” is the source chart’s classification for a supported but less-favorable seasonal range. TerraEvidence keeps that distinction visible without deciding whether a user should plant.
Planting action matters
“Plant” can mean different things. TerraEvidence keeps source-supported actions separate, including direct sow outdoors, transplant outdoors, and crop-specific actions such as planting cloves or sets when the evidence calls for them.
Month-level precision stays month-level
The controlling Harris County source uses graphical seasonal windows. TerraEvidence does not invent exact day boundaries from those graphics. A month overlap means the reviewed window overlaps that month; it does not create a guaranteed first or last planting date.
What you can look up
Move from a county overview to the crop or month you actually need.
The Harris County tool includes reviewed windows across warm-season vegetables, cool-season vegetables, leafy greens, roots, legumes, and other common garden crops. Examples include tomatoes, peppers, broccoli, cabbage, carrots, beans, cucumbers, squash, lettuce, radish, spinach, and corn.
MONTH
Choose a month and scan the Harris County crop ranges that overlap it under the source’s Ideal or Marginal classification.
CROP
Select one crop and review its complete approved Harris County timing instead of searching through a large chart.
YEAR
Scan the whole year using the same approved evidence, with Ideal and Marginal states kept distinct.
Source and provenance
Where the Harris County date ranges come from
Source basis: Texas A&M AgriLife Extension Service — Harris County, Vegetable Garden Planting Dates for Harris County.
TerraEvidence independently reviews and normalizes factual planting information into its own data model and interface. The source chart, graphics, page layout, logos, and protected marks are not reproduced. Source names identify provenance only; TerraEvidence is not affiliated with or endorsed by Texas A&M AgriLife.
Evidence boundary: the public Harris County records preserve the reviewed crop, planting action, source wording, Ideal or Marginal evidence fit, geographic scope, and limits on date precision. Unsupported locations receive no borrowed Harris County dates.
Common questions
Before using the Harris County calendar
Is this a Houston vegetable planting calendar?
It applies when the garden itself is in Harris County, including Harris County portions of Houston. Houston-area gardens in another county should not use Harris County dates until that county has its own reviewed evidence package.
Does TerraEvidence change the calendar based on today's weather?
No. Reviewed seasonal guidance and current weather are separate evidence layers. Weather can provide a caution, but it does not silently rewrite the reviewed local source windows.
Why are there no exact first and last planting days on this page?
The source precision does not justify invented day-level boundaries. TerraEvidence keeps the public claim no more precise than the evidence supports.
What if my county is not available?
The tool fails closed. TerraEvidence would rather show no local schedule than borrow one from a neighboring county and present it as local evidence.
Ready to review
Open the Harris County planting date reference.
Choose Harris County, then use MONTH, CROP, or YEAR to review source-published seasonal ranges with evidence details one click away.
Review Harris County planting date ranges