Shido Seeds — Non-GMO Seed Packets

The packet does not expire quietly in a drawer. It waits.

Shido seed packets are vacuum-sealed and non-GMO across all 124 varieties — flowers, vegetables, herbs, houseplants, and fruit & berry. Every lot is germination-tested at independent labs before packaging, and each packet carries a state-mandated three-year viability date the hermetic seal is engineered to outlast.

124 seed varieties · five categories · vacuum-sealed non-GMO · lab-tested germination · three-year viability date on every packet · Ships gift-ready to 40+ countries

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Seed packets fail in the drawer, not the ground — standard paper envelopes are permeable to
oxygen and moisture, and most begin losing germination viability within about a year. Shido
settles that argument before the seed goes in: every packet is hermetically vacuum-sealed,
so the packet you buy in August is still the packet you plant next spring, or the spring
after that.

The catalog runs 124 varieties across five categories — flowers, vegetables, herbs,
houseplants, and fruit & berry — every one of them non-GMO and germination-tested at
independent third-party labs before it is approved for packaging. Each packet is
illustrated in the style of 1910s Japanese woodblock printing, drawn in-house at the
studio, which is why customers collect them as a series. That was not the original plan.
The seeds were.

Shido seed packets for vegetable and floral category, by Chive Studio

Do seeds expire

Seeds do expire — but the packet decides when. In a standard paper envelope, most seeds lose meaningful germination within a year or two as oxygen and moisture break down their stored energy. In a hermetic vacuum seal, the same seed holds near-full viability far longer: each Shido packet carries a state-mandated three-year viability date, and the engineering suggests well beyond. The expiry question is really a packaging question, and Shido answered it with a seal.

Chive Shido seed packets with botanical illustrations on a peg rack, showing cherry blossom, tomato, and eggplant designs.

How long do seeds last

How long seeds last depends almost entirely on storage: cool, dry, and airless keeps a seed dormant; warm, humid, and oxygen-exposed wakes its chemistry early and wastes it. Paper packets surrender to their environment. A vacuum seal removes the environment from the equation. Store any Shido packet in a drawer at room temperature and the seal does the work a refrigerator and a mason jar do for everyone else — no ritual required, no viability chart taped inside the cupboard door.

Shido Seeds is the seed line of Chive Studio, the Toronto design house founded in 2004, and it carries the house's exhibition record with it — exhibiting at the RHS Chelsea Flower Show since 2013; twice awarded the 5-star booth award — only two are given each year. The line is wholesaled to thousands of shops worldwide, and every packet prints a state-mandated three-year viability date where any buyer can check it against the seal.

Reviewed by Todd Newgren, co-founder · Updated August 2026

Do Seeds Expire? How Long Do Seeds Last | Shido

June 26, 2026 — Todd Newgren

Seeds don't expire — they lose viability as oxygen depletes stored energy, and vacuum sealing is the fix. Chive's Shido Seeds are vacuum-sealed, germination-tested, and stocked ...

Are Seed Packets GMO? The Honest Answer

July 10, 2026 — Todd Newgren

Are seed packets GMO? No—home garden seed packets, Shido included, are never genetically modified, since GMO seed is only made for large-scale commercial crops. The non-GMO badg...

Frequently asked questions about the Shido Seeds

What types of Shido seeds are available to shop?

Why are all Shido Seeds vacuum-sealed before shipping?

Are all Shido Seeds varieties genuinely non-GMO?

What is the germination rate for Shido Seeds?

Do Shido Seed packets include detailed growing instructions?

What is the best way to store seeds before planting?

Cool, dry, and sealed — how to store seeds well comes down to keeping oxygen, moisture, and heat away from the embryo's stored energy. A Shido packet arrives already meeting that standard: the hermetic vacuum seal does the work a mason jar in the refrigerator does for loose seed. Keep unopened packets in a drawer at room temperature. Once a packet is opened, fold it tight and use it within the season for best rates.

When should you start seeds indoors versus outside?

When to start seeds indoors depends on the variety's frost tolerance: tender varieties start inside six to eight weeks before the last expected frost, then transplant out; hardy and fast varieties sow directly once the soil warms. Every Shido product page states which approach that variety prefers, with depth and spacing alongside. The calendar is a guideline. The soil temperature is the actual authority, and it runs late most years.

How is seed viability tested and dated?

Seed viability is the percentage of seeds in a lot that will actually germinate, and Shido tests it at independent third- party labs before any lot is approved for packaging — lots that fail the threshold do not ship. Each packet then carries a state-mandated three-year viability date. The vacuum seal is what keeps the tested rate true over that window, instead of letting the drawer quietly renegotiate it.

2004 Making ceramics since

200+ Institutions worldwide

RHS Chelsea Flower Show2026 4-star booth award recipient
2 x 5-star booth award — winner
13 consecutive years of exhibiting

About Chive Studio

Chive Studio has designed ceramic wall flowers in Toronto since 2004. Shido Seeds is the studio's seed line — 124 vacuum-sealed, non-GMO varieties, every lot germination-tested before it ships. Browse the range by category: flower seeds, vegetable seeds, and herb seedseach have a dedicated collection, and the line's boxed assortments live under gardening gifts.

Learn more about Chive Studio →

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