DIY Mason Jar Herb Garden Kits: Easy Handmade Holiday Gifts for Plant Lovers

Every year around this time I start a list of people I want to give something handmade, and every year that list gets longer than my free time. Mason jar herb garden kits are my answer. They are cheap, they look great lined up on a table, and they are genuinely useful. Your friend gets a little kitchen garden on the windowsill, and a few weeks later they are snipping fresh basil or chives for dinner and thinking of you.

The best part is that you can make a dozen in an afternoon. In this post I will cover two styles of kit, the supplies you need, how to deal with the big mason jar problem (no drainage hole), step-by-step instructions, which herbs to choose, and how to package everything so it looks like it came from a boutique.

Two Ways to Make a Mason Jar Herb Kit

Before you buy anything, decide which kind of kit you want to give.

• Grow-it-yourself kit: Everything goes into the jar dry, including a compressed soil disc, a seed packet, drainage stones, a label and a care card. The recipient adds water and plants it. These travel well, keep for months and are perfect for mailing or for people you will not see until after the holidays.

• Pre-planted jar: You plant the seeds yourself two to four weeks ahead so the jar arrives with green sprouts already growing. These have more wow factor, but they need light and water until you hand them off, so they work best for local gifts.

I usually make a batch of each. Pre-planted jars go to neighbors and coworkers, and dry kits go in the mail to family out of state.

Supplies You Will Need

For each kit you will want:

• A wide-mouth pint jar. Wide mouths are much easier to fill and plant. Quart jars work for larger herbs like basil.

• Drainage material: small pebbles, aquarium gravel, lava rock or clay pebbles (LECA).

• Activated charcoal: a thin layer helps keep the soil fresh in a jar without a hole.

• Growing medium: a light seed-starting mix or potting mix. For dry kits, compressed coconut coir discs are perfect because they expand when you add water.

• Herb seeds: a small packet or a few seeds in a glassine envelope.

• Labels: chalkboard stickers, kraft tags, or printable labels.

• Twine, ribbon or a fabric square for the lid.

• A care card with simple instructions.

Optional extras include mini wooden markers, a small spray bottle, or a square of burlap tucked under the band.

Solving the No-Drainage-Hole Problem

Here is the honest truth about mason jars: they do not have drainage holes, and herbs hate soggy roots. If water collects at the bottom with nowhere to go, the roots rot. There are three ways to handle this, and I recommend picking one and explaining it on the care card.

1. Build a drainage layer. One to two inches of pebbles in the bottom gives extra water somewhere to sit below the roots. A thin layer of charcoal on top of the stones keeps things fresh. This is the easiest method, and it works well as long as the recipient waters lightly.

2. Use the jar as a cachepot. Plant the herb in a small nursery pot or a plastic cup with holes poked in the bottom, then set it inside the jar on a bed of pebbles. The recipient can lift out the inner pot to water it in the sink and drain it.

3. Make a self-watering wick jar. Put water in the bottom, run a strip of cotton cord through a small cup of soil that sits in the jar mouth, and let the plant pull up water as it needs it. These are fun but take a little more time to assemble.

Some crafters drill holes in jars with a diamond glass bit. It can be done, but glass cracks easily and you need a saucer underneath anyway, so I skip it for gifts.

Step-by-Step: Grow-It-Yourself Herb Kit

This version is all dry ingredients, layered so they look pretty through the glass.

1. Clean and dry the jar. Any moisture inside will make the coir clump.

2. Add the drainage layer. Pour in one to two inches of pebbles or clay pebbles.

3. Add a spoonful of activated charcoal. Sprinkle a thin layer over the stones.

4. Drop in the soil disc. One or two compressed coir discs sit on top of the charcoal. They will expand to several times their size when watered, so a pint jar only needs one or two.

5. Tuck in the seeds. Put the seed packet in a small envelope or zip bag so it stays dry, and set it on top.

6. Add the care card. Roll it up or fold it and slide it in, or tie it to the outside with twine.

7. Close the lid and decorate. Add a fabric square under the band, a label on the front and a tag on the twine.

Your recipient just removes the seeds and card, pours warm water over the disc to expand it, fluffs the coir, sows the seeds and sets the jar in a sunny window.

Step-by-Step: Pre-Planted Herb Jar

Start these about three to four weeks before you plan to give them, so the seedlings have time to sprout and look lush.

1. Layer pebbles and charcoal in the bottom of the jar, just like the dry kit.

2. Fill with moist potting mix to about one inch below the rim. Press lightly.

3. Sow seeds at the depth on the packet. Most herbs go about a quarter inch deep. Sow a few extra and thin later.

4. Mist the surface with a spray bottle until it is evenly damp, not soaked.

5. Cover the jar loosely with plastic wrap to hold humidity until seeds sprout. Remove it as soon as you see green.

6. Give them light. A bright south-facing window or a small LED grow light works best. In Arizona, a window with morning sun is great, but keep jars out of hot afternoon glare, since glass can heat up quickly.

7. Water carefully. Mist or add a tablespoon or two of water at a time. Check the pebbles at the bottom. If you see standing water above the stones, hold off.

8. Thin seedlings to the strongest few once they have true leaves.

By gift day you should have a little jar full of bright green herbs.

The Best Herbs for Mason Jar Kits

Not every herb is happy in a jar. The best choices are compact, quick to sprout and forgiving.

• Basil: Fast and fragrant. Give it the sunniest window and a quart jar if you can.

• Chives: Practically indestructible and great for snipping onto eggs and potatoes.

• Parsley: Slow to sprout, so it is better for dry kits than pre-planted jars.

• Cilantro: Quick to grow in cool weather, perfect for winter windowsills. My cilantro guide is here: https://www.greenthumbhobbies.com/post/cilantro-arizona

• Thyme and oregano: Small, tough and happy on the drier side.

• Mint: Vigorous and almost impossible to kill. Keep it in its own jar.

Avoid big perennials like rosemary and sage from seed. They are slow and do better as small cuttings or starter plants.

For a themed set, try an Italian trio (basil, oregano, parsley), a taco trio (cilantro, chives, oregano) or a tea trio (mint, lemon balm, chamomile).

What to Write on the Care Card

A good care card makes the difference between a gift that thrives and one that quietly dies on the counter. Keep it short and friendly:

• Light: Place in your sunniest window or under a grow light. Herbs need at least six hours of bright light.

• Water: This jar has no drainage hole. Add water a little at a time, and stop when the soil is damp. Never let water stand above the stones.

• Harvest: Snip from the top once plants are a few inches tall. Regular trimming keeps them bushy.

• Transplant: When the herbs fill the jar, move them into a pot with drainage or into the garden.

I like to print these on cardstock with a small herb drawing, cut them to fit and punch a hole for the twine.

Labels and Packaging Ideas

This is where the kits go from craft project to gift-shop quality.

• Chalkboard labels let you write the herb name in chalk marker, and the recipient can reuse them.

• Kraft tags with a stamped leaf and the herb name look rustic and charming.

• Fabric toppers in holiday prints, cut in a circle with pinking shears and held under the band, add instant color.

• Painted lids in a single color tie a set together.

• Mini wooden markers poked into pre-planted jars make them feel finished. I have a whole guide to painted rock markers too: https://www.greenthumbhobbies.com/post/painted-rock-garden-markers

For a set of three, nest jars in a small wooden crate or a shallow box filled with crinkle paper.

Gifting Ideas

Mason jar herb kits fit just about every occasion:

• Teacher and coworker gifts. Affordable enough to make a batch, nice enough to impress.

• Hostess gifts. Bring a pre-planted basil jar to holiday dinners instead of another bottle of wine.

• Stocking stuffers. Dry kits in half-pint jars fit right in.

• Wedding or party favors. Match the fabric toppers to the event colors.

If you like this kind of gift, my teacup planters (https://www.greenthumbhobbies.com/post/diy-teacup-planters) and seed paper cards (https://www.greenthumbhobbies.com/post/seed-paper-cards) are two more easy handmade options.

Tips for Success

• Make extras. A seed or two always fails, and you will think of more people to give them to.

• Test one first. Plant one pre-planted jar early to check your timing.

• Keep dry kits dry. Store them sealed in a cool spot. Moisture is the enemy of seeds and coir.

• Mind the heat. Do not leave planted jars in a hot car. Arizona sun can cook seedlings through glass in minutes.

Troubleshooting Common Problems

• Seeds never sprouted: The soil was probably too dry or too cold. Keep the surface evenly damp and the jar somewhere around room temperature.

• Leggy, floppy seedlings: They need more light. Move the jar to a brighter window or put it under a grow light.

• White fuzz on the soil: That is usually harmless mold from too much moisture. Scrape it off, water less and give the jar more airflow.

• Yellow leaves: Often a sign of soggy roots. Let the soil dry out a bit before watering again.

• Smelly jar: Water has pooled at the bottom. Tip out what you can and use less water going forward.

Final Thoughts

There is something special about giving a gift that keeps growing. Mason jar herb kits are easy, inexpensive and fun to make, and they bring a little green into someone's kitchen in the middle of winter. Make a batch this weekend, and tell me in the comments which herbs you are putting in yours.