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Tarragon Herb

Seed Grown · Asteraceae

Aromatic anise-scented herb used in French-style cooking and classic vinegar blends. Seed-grown tarragon is easy to start, but flavor and growth habit are usually less refined than true French tarragon propagated from divisions. Key facts: 85 days to maturity, 6+ hours of sun, 18–24 " spacing. Container-friendly (minimum 3-gallon pot).

Updated April 19, 2026 · Backed by 5 cited sources
Overview

At a Glance

The essentials first: timing, light, spacing, seed-starting, container fit, and overall size.

Days to maturity
85 days
Sun
6+ hours
Full Sun To Very Light Shade
Spacing
18–24 "
between plants
Seed start
0–6 weeks
before transplant
Container
Yes
3+ gallon pot
Height
2–3 ft
at maturity
Planting window

Zone Planting Guide

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Care

Growing Guide

Everything in one place: seed starting, transplant timing, watering, soil, and structural support.

Seed starting
Germination
Time10–21 days
Optimal temperature68°F
Seed depth0.125"
Moving outdoors
Transplanting
Minimum soil temp55°F
Harden off5 days
Moisture
Watering
Weekly0.5–1 "
NeedsLow
Drip or careful hand watering
Root zone
Soil
pH range6–7.5
PreferredWell Drained Sandy Or Loamy Soil Enriched Lightly With Organic Matter
Resilience

Plant Health

Stress tolerance, resistance notes, and the most common problems to watch for as plants mature.

Tolerance
Heat: Moderate Cold: Moderate Drought: Moderate

Common Issues

Winter Loss

Cause: Wet, cold soil damages roots and crowns.

Prevention: Plant in raised ground or coarse soil and avoid heavy mulches.

Weak Flavor

Cause: Seed-grown tarragon is commonly Russian tarragon, which is less aromatic than French tarragon.

Prevention: Harvest young leaves and keep plants in full sun.

Root Rot

Cause: Poor drainage and overwatering.

Prevention: Use sharp drainage and let the root zone dry slightly between waterings.

Feeding & picking

Nutrition & Harvest

How hungry the plant is, what ripe harvest looks like, and how long the crop keeps after picking.

Feeding
Nutrition
Feeding intensityLight feeder
RecipesWorm Castings Topdress
Timing
Harvest

Harvest fresh young leaves and tips before plants flower heavily.

Expected yield0.2–0.6 lbs/plant
Storage4 days — Use fresh quickly, refrigerate sprigs briefly, or infuse in vinegar; drying is poor for quality.
Plant relationships

Companion Planting

Helpful neighbors can support growth or deter pests. Keep antagonistic plants separated to reduce stress and competition.

What you'll need

Growing Supplies

Based on Tarragon's growth profile -- recommendations matched to this variety's specific requirements.

Drip irrigation / soaker hose kit

Every gardener benefits from putting water at the root zone instead of on the leaves, because drip and soaker systems reduce foliar disease pressure by limiting leaf wetness and soil splash. A quality kit should include a backflow preventer, filter, pressure reducer, and UV-resistant tubing.

Source: Iowa State University Extension; Colorado State University Extension; UMass Extension

Soil test kit

A soil test gives a baseline for pH and nutrient status so gardeners can add only what the soil actually needs. Prioritize a mail-in or lab-affiliated kit whenever possible because extension guidance notes that laboratory testing is more accurate than instant readers.

Source: University of Maryland Extension; Purdue Extension; Montana State University Extension

Quality bypass pruners

Extension guidance favors bypass designs because they make cleaner, closer cuts on living tissue than anvil types. Look for hardened steel blades that can be sharpened, a comfortable grip, and a cutting capacity matched to real home-garden stems.

Source: University of New Hampshire Extension; Iowa State University Extension; Purdue University Extension

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Research

Sources

Reference material and extension guidance used to build this growing guide.

seed_catalog SeedsNowuniversity University of Maryland Extensionuniversity Illinois Extensionuniversity NC State Extensioninference Seed-grown culinary behavior inferred from Russian tarragon culture
Internal links

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