Delft Perpetual Leek Seeds

Delft Perpetual Leek Seeds - Allium ampeloprasum - Perennial Leek

Allium ampeloprasum
Perennial Leek

Hardy to Zone 6
Full Sun
Germination Tested October 24, 2025: 100%

Approximately 75 seeds per packet

$5.50 CAD

Sale Sold out

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Delft Perpetual is a rare perennial winter leek that sprouts new plants from its base. If the leeks are harvested carefully by cutting just above the ground and leaving the roots and base intact, the offshoots can grow into new leek plants. Alternately you can wait until the leeks flower in their second year, and the offshoots will starts to grow shortly after seed set.

An excellent perennial vegetable for the permaculture garden. Leeks can be used almost interchangeably in place of onions in cooking, but with added greens. The beautiful blue-green leek greens (tops) are also tasty- don't throw them out!

Delft Perpetual was selected out of the "Delft" variety by Frank Morton of Wild Garden Seed, which he describes as "Winter leeks with long well-wrapped shafts, strong upright leaves, and a melting tender quality with light sauté. Slices turn a bright green with cooking, very appealing."

If you do allow these leeks to flower in their second year, the flowers are a range of whimsical white, pink, and purple globes that are adored by pollinators. The seeds do take a long time to mature however, so you may need to cover them with a temporary tunnel to keep the seed dry as they mature.

These seeds are rare and hard to find so don't miss out!

This seed has been released under the Open Source Seed Initiative (OSSI) license to keep it out of the hands of multinational seed corporations, and keep it in the hands of the people. The pledge states: “You have the freedom to use these OSSI-Pledged seeds in any way you choose. In return, you pledge not to restrict other's use of these seeds or their derivatives by patents or other means, and to include this pledge with any transfer of these seeds or their derivatives.” More information on OSSI can be found at osseeds.org.

Growing Instructions

Growing instructions: Sow seeds shallowly indoors in January or February. I like to sow my onions and leeks in deep trays so they have enough soil to grow for a few months. Plant outside once they are a few inches tall and harsh frosts have passed. Plant about 6-12 inches apart. Harvest leeks by carefully cutting at the base (this may take a few months to a year to get large enough to your liking). Wait for the offsets to sprout after cutting.

Shipping & Returns

By placing an order, customers agree to the shipping & refund policies detailed on this page.

Most orders are sent via Canada Post to keep costs low.

Shipping within Canada

We ship seeds in Canada via Canada Post's regular letter mail, which is an untracked service, and usually takes 1-3 weeks to arrive once we fulfill your order, but occasionally orders take longer, especially to the Eastern provinces and rural areas.

Customers can now opt for tracked, express shipping options at checkout if you require faster delivery.

Larger bulbs and plants are usually sent via tracked flat rate box.

Shipping to the US

We require all US shoppers to obtain a Small Seed Lot Import Permit before we can mail your seeds. It's free to apply, and you will likely be granted the permit instantly, although some require additional verification via mail.

We recommend obtaining a permit BEFORE placing your order.

Please email your permit and shipping label PDFs to us promptly before or after you order.

If you do not email us your permit documents after one week, we will refund your order minus a $10 processing charge.

How to apply for your Small Seed Lot Import Permit:

Please follow these instructions carefully so you don't end up with the wrong type of permit!
Go to https://efile.aphis.usda.gov/s/
Select PPQ-587 in the dropdown menu and click "Get Started".
Please use the exact same name and address as on your order.
Login and follow the instructions to obtain a permit.
Under the Commodity Type drop down, make sure you select the "Small Lots of Seed". See screenshot below.
It's best to list "Eligible Taxa" instead of listing all the species you'd like to import so you don't need to worry about missing any species you ordered.
Once you receive your permit, promptly email us 2 PDFs: a copy of your permit and a copy of the yellow/green shipping labels. Tell us which USDA station you want us to send the seeds to. If not mentioned we will choose one close to you. Our email is grow@cicadaseeds.ca
Once we've accepted your documents, please contact the plant inspection station we are shipping to and let them know to expect your shipment. Station phone numbers can be found here (Scroll down to the "Contact Us" section near the bottom and select the state). This reminds stations to check for your package, otherwise they may forget about it.

What happens next?

After receiving your documentation, we will mail your seeds to an inspection facility in the US. We will ship via tracked parcel, and you will receive the tracking number when your order has shipped. Orders will be mailed first to a plant inspection facility in the US. You will receive a delivery notification to the STATION, not your address. So don't worry if your package has been "delivered" but you can't find it anywhere in your yard. The station will then inspect your seeds then forward the package to your address via regular mail without tracking available.

The mail and inspection process can take several weeks, depending on how long the inspection takes.

Unfortunately we are not able to replace seeds that are confiscated or destroyed by US customs, or for any additional duties or tariffs placed on your order. We do our very best to follow the regulations, but occasionally USDA staff will destroy seeds without cause. We want to keep making our seeds available to the US, but to do so we must let the customer accept this risk. Thanks for your understanding.

Need help? Contact the APHIS plant permit team at:

EMAIL: plantproducts.permits@usda.gov

PHONE: 877-770-5990

Shipping Internationally

International customers can select tracked or untracked shipping at checkout. The package will list the contents as "Garden Seeds". It is your responsibility to ensure you have the required import permit. We are not able to send any live plant materials internationally. Cicada Seeds will not be responsible for any orders held or confiscated by customs, or for any additional duties or tariffs placed on your order.

International shipping countries include: Austria, Belgium, Czechia, Denmark, France, Germany, Hong Kong SAR, Ireland, Israel, Italy, Japan, Malaysia, Netherlands, Norway, Portugal, Singapore, South Korea, Spain, Sweden, Switzerland, United Arab Emirates, United Kingdom.

This list may change without notice. Sometimes Canada Post will not allow us to ship to certain countries due to wars or natural disasters, see this page for delivery service alerts.

Please reach out if your country is not on this list, email us and we will try to arrange an alternate shipping option.

Refund Policy

Refunds: We stand behind our seeds, so if for some reason you are not satisfied with your purchase, please reach out to us via email and we will do our best to make it right. Please note that shipping costs are non-refundable.

Cancelled orders: If you wish to cancel an order after purchasing, we may refund your order minus card processing and admin fees at our discretion.

Refused orders: We cannot issue a refund if you refuse to accept an order we've sent to you, or made available for local pickup.

Incorrect addresses: Please double check your mailing address, and let us know ASAP if you've entered an incorrect address at checkout. We may need to charge for additional shipping fees to resend orders.