Skip to content
Plant knowledge. Grow good food.

Thai Basil Seeds

$3.49

250 seeds per packetOpen-pollinated heirloom

In stock

A warm-season basil with deep-purple stems, dark green leaves, and a fragrant character that stands apart from standard sweet basil. Useful in the kitchen and handsome in the herb bed.

One packet: 250 seeds. Seeds for planting, not live plants.

Shipping: $5.95 standard shipping; free at $35+ in qualifying value, to the 48 contiguous U.S. states. Eligible collections count at their regular packet value; coupon rules apply. Orders containing only in-stock items normally ship within 2 weekdays (Monday–Friday) via USPS with tracking. Carrier delivery time is additional. Shipping and backorder details

First harvest
Begin picking once plants are established
Light
Full sun
Plant habit
Upright, branching, frost-tender annual
Support
Usually none
Plant spacing
8–18 inches
SKU: H01 Category: Herbs

Description

AN HERB BED WITH MORE CHARACTER

Basil, but unmistakably Thai basil.

Glossy green leaves, purple stems, and a sweet, licorice-like aroma give Thai basil its own place in the kitchen. Cut tender tips above a healthy leaf pair for curry, noodles, or soup; leave a separate plant flowering if blooms or seed are the goal.

Choose it for: a warm, sunny herb bed or patio pot that you visit often, with fresh leaves for Southeast Asian-inspired cooking.

FIND ITS PLACE

A summer herb with its own flavor.

Green Shiso offers broader leaves for small wraps and a different citrus-mint character. Slow Bolt Cilantro suits fresh salsa and cool-season leaf harvests. Grow basil alongside either for more choices at cooking time; their flavors are distinct.

FROM PACKET TO GARDEN

Warm soil, bright light, regular picking.

Sow shallowly.

Sow about ¼ inch deep in seed-starting mix, or direct sow after frost when soil is warm. Keep the seed zone evenly moist.

Build a sturdy plant.

Give seedlings strong light. Acclimate indoor plants to outdoor sun and wind, then space roughly 8–18 inches apart according to the canopy you want.

Start with a small cut.

Once well rooted and growing, cut a tender tip just above a leaf pair. Leave healthy leaves below to supply the new side shoots. [2]

SMALL DECISIONS, BETTER HARVESTS

Practical growing tips

Wait for new growth.

A chilly transplant that stays the same size needs warmth and a root-zone check. Extra fertilizer cannot replace suitable temperatures.

Keep the branching points.

Harvest stem tips above nodes instead of stripping every leaf. Leave most of a small plant intact and increase picking as side shoots fill out.

Check the pot, not the clock.

Feel below the surface before watering. A small pot may need frequent checks in heat; wet mix and a wilted plant call for a drainage check.

Choose which plants may bloom.

Remove developing flower spikes from leaf plants. Let a separate plant bloom if flowers or seed are part of your plan. [2]

FROM GARDEN TO KITCHEN

Harvest in rounds.

First picking: take one or two tips from an established plant. At full growth: rotate around the canopy and wait for leafy regrowth between larger cuts. Before cold weather: gather usable leaves while they are still healthy.

Use tender leaves fresh or add them near the end of cooking. Freeze surplus in small portions for cooked dishes; it will lose the texture of a fresh garnish.

A FEW THINGS WORTH KNOWING

Before you plant.

Can I keep it on a windowsill?

A bright window can work, but weak light produces stretched growth. A sunny outdoor pot in warm weather is usually a better setting for regular kitchen-sized harvests.

Will flowering ruin the plant?

Flowering is a normal stage. For more tender leafy growth, cut flower-bearing tips back above healthy leaf pairs; an old, woody plant may recover less strongly than a younger one.

How much space should one pot have?

A 3–5-gallon container for one plant is a generous practical starting plan. Use drainage holes and allow room for a branching canopy. The guide explains moisture and pruning tradeoffs.

MAKE ROOM FOR THE HARVEST

Plan for how often you cook.

Start with a few accessible plants and stagger heavier picking between them. Frequent small garnishes need less leaf area than repeated large batches of sauce. Reserve seed for a replacement sowing if the warm season is long.

Read the Thai Basil growing guide for a staged checklist, branch-by-branch harvest advice, and symptom checks.

Growing references

Extension and supplier guidance inform these recommendations; local weather and growing conditions set the pace.

  1. University of Minnesota Extension — Growing basil.
  2. Johnny’s Selected Seeds — Basil: Key Growing Information.
  3. Johnny’s Selected Seeds — Holy basil species listing.

FROM PACKET TO PATCH

The useful details, without the seed-catalog fine print.

These are the practical numbers and traits we would want beside us while planting. Keep the packet handy, too: lot-specific labeling and instructions take priority if they differ.

About timing
Harvest and bloom windows are estimates, not promises. Weather, soil, planting date, and whether a crop is timed from sowing or transplanting can all move the calendar.

IN THE PACKET

Know what you are planting.

The variety, seed type, and packet information in one place.

Packet contents
250 seeds
Seed type
Open-pollinated heirloom
Botanical name
Ocimum basilicum var. thyrsiflora

GETTING STARTED

Plant with a plan.

Depth, spacing, and light requirements before the first seed goes in.

Sowing depth
¼ inch
Plant spacing
8–18 inches
Light
Full sun

AS IT GROWS

Give it the room it needs.

Habit, support, and timing so the garden does not have to guess.

Plant habit
Upright, branching, frost-tender annual
Support
Usually none
First harvest
Begin picking once plants are established

VARIETY NOTES

A few more useful details.

Additional information recorded for this particular variety.

Leaf & stem color
Dark green leaves; purple stems

Have a question that is not answered here? Ask Hollowstead before planting—we would rather help early than troubleshoot late.

FROM ONE GARDEN TO ANOTHER

How did it grow for you?

A good garden note helps the next person get started. Tell us what went well, what surprised you, and what you would do differently.

Getting started

Growth & care

Picking & kitchen use

Reviews

THIS PATCH IS JUST GETTING STARTED

Your garden could start the conversation.

No published reviews for this variety yet. Once you have tried these seeds, your experience can help another gardener decide what to plant.

A few honest details are worth more than a perfect growing season.

Share a note from your garden.

Your email address will not be published. Required fields are marked *

When did you sow, and how did it go? Picking & kitchen use are useful details, too. Still growing? Early observations are welcome. Please leave out order numbers and private contact details.

Need help with a packet or an order? Contact Hollowstead so we can look into it with you.

LEARN TO GROW IT

Good seed is only the beginning.

Start with the variety-specific notes, then dig into sowing, support, harvest, and troubleshooting when you need them.

THAI BASIL GUIDE

Thai Basil Growing Guide

Grow Thai basil for fragrant summer leaves and distinctive purple stems. Learn how to start seed, manage warmth and moisture, pinch for branching, handle flower spikes, and harvest for the kitchen.

Read the guide

HARVEST GUIDE

When and How to Harvest Herbs

Harvest basil, cilantro, dill, and shiso without cutting away the plant’s future. Learn when to pinch, snip, gather leaves, harvest flowers, and leave stems for mature seed.

Read the guide

Browse all Hollowstead growing guides →