DEALHACK

agents@dealhack$fetch the freshest Thompson & Morgan codes…

Valid Thompson & Morgan Coupons for September 2026

✓agent-verified & updated·

Today's Top Thompson & Morgan Coupons:

15 offers in total
10%
OFF

10% Off Seed & Plant Orders

worked at checkout

Take 10% off seed and plant orders at Thompson & Morgan when you use this code.

  • saves ~10%
  • sitewide
How We Verify This Code
99
code confidence
very likely to work
16 of 16
code checks worked
10% of the cart
median discount

The discount amount is measured on real cart totals before and after the code was applied, not taken from the advertised offer.

Code confidence is our agents' read on how likely this code is to work. It isn't a strict measure of success probability: plenty of codes score low and still work at checkout. It was last recalculated .

Shoppers here submitted this code or reported back on how it went. It gets the same checks as every other code on this page.

use code
5%
OFF

5% Off Your First Order at Thompson & Morgan

worked at checkout

Enjoy 5% off your first Thompson & Morgan order when you use this code.

  • saves ~5%
  • sitewide
How We Verify This Code
81
code confidence
very likely to work
42 of 42
code checks worked
5% of the cart
median discount

The discount amount is measured on real cart totals before and after the code was applied, not taken from the advertised offer.

Code confidence is our agents' read on how likely this code is to work. It isn't a strict measure of success probability: plenty of codes score low and still work at checkout. It was last recalculated .

Shoppers here submitted this code or reported back on how it went. It gets the same checks as every other code on this page.

use code
20%
OFF

20% Off Plant, Bulb & Seed Orders

worked at checkout

Get 20% off plant, bulb, and seed orders at Thompson & Morgan with this coupon code.

  • saves ~8%
  • sitewide
How We Verify This Code
81
code confidence
very likely to work
52 of 52
code checks worked
8% of the cart
median discount

The discount amount is measured on real cart totals before and after the code was applied, not taken from the advertised offer.

Code confidence is our agents' read on how likely this code is to work. It isn't a strict measure of success probability: plenty of codes score low and still work at checkout. It was last recalculated .

Shoppers here submitted this code or reported back on how it went. It gets the same checks as every other code on this page.

use code
10%
OFF

Take 10% Off Orders at Thompson & Morgan

worked at checkout

Enjoy 10% off qualifying orders at Thompson & Morgan when you use this code.

  • saves ~10%
  • community
How We Verify This Code
79
code confidence
likely to work
40 of 40
code checks worked
10% of the cart
median discount

The discount amount is measured on real cart totals before and after the code was applied, not taken from the advertised offer.

Code confidence is our agents' read on how likely this code is to work. It isn't a strict measure of success probability: plenty of codes score low and still work at checkout. It was last recalculated .

Shoppers here submitted this code or reported back on how it went. It gets the same checks as every other code on this page.

use code
25%
OFF

Save Up to 25% on Selected Vegetable Ranges

Enter code VEG20Z at checkout to save up to 25% on selected vegetable ranges at Thompson & Morgan. Offer applies to designated vegetable products within the promotion and may be available for a limited period; UK pricing and delivery terms apply.

use code
25%
OFF

Save Up to 25% on Selected Fruit Ranges

Use code FRUIT20Z to save up to 25% on selected fruit ranges at Thompson & Morgan as part of a VIP promotion. Discount is valid on qualifying fruit products only and may be time-limited; standard delivery charges apply.

use code
25%
OFF

Save Up to 25% on Selected Plant Ranges

Apply code PLANT20Z at checkout to save up to 25% on selected plant ranges at Thompson & Morgan. Offer is limited to participating plant lines and may run for a limited time; prices and delivery charges are shown in GBP for UK customers.

use code
25%
OFF

Save Up to 25% on Selected Seed Ranges

Use code SEED25Z to save up to 25% on selected seed ranges at Thompson & Morgan as part of a tiered VIP promotion. Discount applies only to qualifying seed products and may be time-limited; see offer page for full terms and delivery details.

use code
DEAL

Save on Gifts and Accessories Range

Use code GIFT20Z to enjoy promotional savings on selected gifts and gardening accessories at Thompson & Morgan. Discount applies only to qualifying gift and accessories items within the promotion; duration may be limited and terms are primarily for UK customers.

use code
70%
OFF

Clearance Sale: Up to 70% Off Selected Garden Lines

Take advantage of a clearance sale with up to 70% off selected plants, bulbs, seeds and gardening essentials at Thompson & Morgan. Savings apply to marked clearance items while stock lasts, with normal delivery charges.

Get Deal
60%
OFF

Sizzling Summer Clearance: Up to 60% Off Plants, Bulbs & Seeds

Save up to 60% on selected plants, bulbs and seeds in the Sizzling Summer Clearance event at Thompson & Morgan. Discount applies to clearance ranges while stock lasts; normal delivery charges apply.

Get Deal
10%
OFF

Radio Times Partner Offer: 10% Off Site-Wide

Get 10% off site-wide on flowers, plants, seeds, bulbs and more via the Radio Times partnership offer at Thompson & Morgan. Discount is applied automatically at checkout on qualifying items for participating customers.

Get Deal
£26

Mushroom Kits Bundle: Any 2 for £26

Save with a mushroom kits bundle at Thompson & Morgan by getting any 2 selected mushroom windowsill kits for £26. Offer applies to qualifying mushroom kits while stock lasts, and normal delivery charges apply.

Get Deal
£10

Mix & Match Perfect Peonies: Any 2 for £10

Enjoy a peony mix-and-match deal with any 2 selected peony plants for £10 at Thompson & Morgan. Offer applies to participating peony varieties, is limited to a maximum of 4 packs per order, and is valid while stock lasts; normal delivery charges apply.

Get Deal
£5.99

Sollya Heterophylla Ultra Blue for £5.99 With Orders Over £60

Add Sollya heterophylla 'Ultra Blue' in a 9cm pot for £5.99 when your order totals over £60. The deal is presented as a shopping-basket offer on Thompson & Morgans Special Offers page.

Get Deal

Thompson & Morgan Shopping Info

Discounts

✓
Popup/Newsletter
Exclusive email-only deals and early sale access upon signup
✓
Loyalty
Gardening Club
✓
Refer a Friend
20% off

Shipping & Returns

✕
Free Shipping
✕
Intl Shipping
All items on this site are for delivery to UK addresses only.
✕
Free Returns
Window: 30 days · Fee: Customer cost
Final Sale
Perishable items such as plants, bulbs, bareroots and tubers have specific guarantee conditions instead of standard retu

Payments

Cards
Visa, Mastercard
Wallets
PayPal, Amazon Pay
BNPL
—
✓
Gift Cards

Thompson & Morgan Code Checks, Day by Day

Every Thompson & Morgan code check from the last 14 days, plotted by the day it ran. Green is how many came back working. Red is how many thompson-morgan.com would not accept. That is the checkout testing you did not have to sit through yourself.

agents@dealhack: ~/signals --store thompson-morgan.com --days 14
180
code checks run
180
checks where the code worked
100%
success rate
5
different codes tried
14 days · 180 code checks · 180 worked
workedpeak 26
would not applypeak 1
Daily coupon check results
DayCodes that workedCodes that would not applySuccess rate
70100%
60100%
30100%
60100%
220100%
170100%
70100%
260100%
150100%
230100%
150100%
100100%
100100%
130100%
where this data came from:
178 automated cart runs2 web search results

Last confirmed working on . Codes that stop clearing get pulled off this page automatically.

What These Numbers Mean

A code check is one result for one code. Most are our agents applying it to a real cart and reading the order total before and after; the rest come from tracked orders and from shoppers reporting back, as broken down above. Worked means the code was accepted and the total went down. Would not apply means thompson-morgan.com refused it on that cart. That is not the same as the code being fake. The usual reasons are:

  • It expired or the store switched it off after it was published.
  • It was single-use and had already been redeemed.
  • It only covers certain categories, brands or individual products.
  • The cart did not reach a minimum spend.
  • It is limited to new customers, a first order, or an email sign-up.
  • It cannot be combined with an active sale or another code.
  • It is tied to a different country, currency or membership.

So a code that failed one check can still work on your cart, and the success rate (checks that worked divided by all checks) is best read as how easily Thompson & Morgan discounts apply in general, not as a verdict on any single code. Hover any bar in the chart to see that day on its own.

When Thompson & Morgan Runs Sales

Recurring events worth timing an order around. Windows shift year to year, so treat them as a shopping calendar rather than a fixed date.

  1. late February to April
    Spring Planting Sale

    Features major discounts across bare root perennials, summer-flowering bulbs, and pre-planted hanging baskets as the gardening season ramps up.

  2. September to October
    Autumn Clearance Event

    Offers widespread price reductions on autumn-planting bulbs, winter bedding plants, and perennial stock to clear nursery fields before frost.

  3. late December to January
    Boxing Day & New Year Garden Sale

    Provides steep seasonal discounts on seed packets, gardening tools, greenhouse equipment, and early-bird plug plant reservations.

Locate the Code Box at thompson-morgan.com

The agents tested the code. Entering it is the one part we leave to you. Here's exactly where the Thompson & Morgan promo code goes at checkout.

Follow the shopper-submitted screenshots below to spot the Thompson & Morgan promo box and apply your code. Miss a step and even a working code does nothing, so the agents mapped every one for you.

Thompson & Morgan checkout page showing the Do you have a voucher code ? field and APPLY button

How to find

  1. 1.Go to the Thompson & Morgan homepage at thompson-morgan.com
  2. 2.Search for a product like 'seeds' and add an item to the basket
  3. 3.Click on the 'Basket' icon at the top right to view your shopping basket
  4. 4.Locate the 'Do you have a voucher code ?' section in the right-hand column
  5. 5.Enter your code into the text box and click 'APPLY'

How to use

Type your voucher code into the input field under 'Do you have a voucher code ?' and click the 'APPLY' button.

Before You Buy at Thompson & Morgan

What shoppers ask most about Thompson & Morgan.

›Can multiple promotional discount codes be applied to a single order?

Only one promotional code or voucher key can be used per transaction at checkout. Promotional vouchers are personal to each individual and cannot be stacked with other offers or applied retrospectively.

›Are there any items or product categories excluded from promotional codes?

Promotional codes never apply to third-party Marketplace vendor items, eGift vouchers, or select pre-cleared promotional lines unless explicitly stated otherwise in the offer terms.

›Why do different plant varieties arrive on different days?

Each plant variety or product is packed separately and dispatched at the optimum time for planting according to seasonal growth cycles. You will not incur any extra delivery charges for items shipped across multiple parcels.

›How does the Double Money Back Guarantee operate on select varieties?

For designated 'Grow the Best' varieties, customers who feel they have grown superior specimens can claim a double refund by submitting written details including soil type, location, and fertilizer use by September 30th.

How We Verify Thompson & Morgan Codes

Nothing goes up here on trust. A Thompson & Morgan code is collected, applied to a real thompson-morgan.com cart, dated the last time it took money off an order, scored on what came back, and pulled once it stops clearing. Promotions have no code to run through a checkout, so those are dated when they go live and dropped when they lapse. Here is how far that has got on this page, and every change the agents logged along the way.

agents@dealhack: ~/verify --store thompson-morgan.com --log
collect15 Thompson & Morgan offers listed here: 9 codes you paste at checkout, 6 promotions that need none · 4 sent in by shoppers
test4 codes put through a live thompson-morgan.com cart · last run
confirm4 of 9 codes took money off an order in the last 30 days · most recently
score4 codes rated on how likely they are to work · last recalculated
measure4 codes with a discount measured on real carts
pruneexpired offers and dead codes drop off this page automatically

Recent Thompson & Morgan offer activity

Each entry is a change the agents logged on this page, dated to the day it happened.

  1. 4 codes rescored on fresh results

    179 signals read · odds of working recalculated

  2. 4 codes worked on live thompson-morgan.com carts

    each one took a discount off a real order

  3. 4 codes retested at checkout

    applied to a live thompson-morgan.com cart

  4. 10 new offers added

    5 to paste at checkout, 5 that need no code

  5. 4 new codes added

    4 sent in by shoppers

The agents keep retesting every Thompson & Morgan code on this page. No one here vouches for a code they did not watch work. If one slips through expired, take the next on the list. We keep backups.

Help Other Thompson & Morgan Shoppers

Not every Thompson & Morgan code reaches us from the store. 4 codes on this page were first submitted by shoppers. Wherever a code comes from, it still has to pass the same cart test before it goes up here.

8 hours
since a code sent in by a shopper last took money off a real thompson-morgan.com cart
44%
of the Thompson & Morgan codes on this page came from shoppers

Have a code we missed?

Send it over and the agents will run it through a real thompson-morgan.com cart. If it works, it lands here with the test behind it.

Did a code work for you?

Open any Thompson & Morgan code above and tell us whether it worked. It takes one tap, no sign-up, and a code that keeps failing gets pulled off the page.

Rate a code

Thompson & Morgan Customer Support

Need help with your shopping? Here's what's available for Thompson & Morgan when an order, return, or promo code needs a human.

Phone

0333 400 0033

Email

ccare@thompson-morgan.com

Live chat

Not available

Help center

www.thompson-morgan.com/contact-us

Telephone lines open Monday to Sunday 9am - 5pm.

About Thompson & Morgan

Who you're buying from.

Brand Profile

Websitethompson-morgan.com
Founded1855
HeadquartersIpswich, UK
Parent companyBranded Garden Products Limited
ReferenceWikipedia
Follow Thompson & Morgan for sale alerts and new arrivals

Did You Know

Founding

Thompson & Morgan was founded in 1855 by botanist William Thompson behind a baker's shop in Ipswich, England.

Flagship Product

The company showcases over 8,000 distinct gardening products, rare seeds, and young plants across its global platforms.

Manufacturing

Thompson & Morgan developed an exclusive automated cartridge plug system that air-prunes roots to build stronger lateral root structures.

Stores Like Thompson & Morgan: Today's Best Coupons

These 12 stores sell products similar to Thompson & Morgan. Below you can see the best coupon or deal available at each one today, so you can compare prices before you buy. 8 of them have a promo code you can copy at checkout.

Public Lands20% off

Get 20% Off Sitewide with This Exclusive Coupon Code

Use This Public Lands Coupon to Get 20% Off Any Order

Get Code
Steep & Cheap20% off

Extra 20% Off Select Styles

Save an extra 20% on select styles at Steep & Cheap when you use this code.

  • store issued
Get Code
AQ Outdoors

Shop AQ Outdoors On-Sale Collection

Browse the AQ Outdoors on-sale collection for paddlesports gear, apparel, and accessories, including select drysuits and helmets with significant price reductions.

Get Deal
WYBOT10% off

10% Off Eligible WYBOT Orders

Use this promo code to save 10% on eligible WYBOT purchases.

  • community
Get Code
Beatbot60% off

Take 60% Off Storewide at Beatbot

Apply this discount code to save 60% on storewide Beatbot purchases.

  • saves ~$53.00
  • store issued
Get Code
MowratorFree delivery

Free 2-7 Day Delivery on US Orders

US orders qualify for free delivery in approximately 2-7 days according to Mowrator's official shipping terms.

Get Deal
Hike Footwear10% off

Take 10% Off Storewide

Apply this discount code to save 10% on all storewide purchases at Hike Footwear.

  • saves ~$7.49
  • community
Get Code
Outdoor ResearchFree shipping

Free Shipping on Orders $125+ at Outdoor Research

Enjoy free standard shipping on qualifying Outdoor Research orders of $125 or more. Free shipping applies automatically on eligible orders meeting the minimum subtotal.

  • saves ~$14.57
  • community
Get Code
Marshalls Garden£5 off

£5 Off Your Marshalls Garden Order

Take £5 off your eligible Marshalls Garden order when you use this discount code.

  • saves ~19%
  • community
Get Code
Helly Hansen15% off

15% Off With Email Sign-Up

Subscribe to receive 15% off your first full-price purchase. The discount applies to full-price items only.

Get Deal
TideWe$40 off

Save $40 on Tidewe Orders $269+

Redeem this discount code to save $40 on Tidewe orders of $269 or more.

  • store issued
Get Code
Filson10% off

10% Off Your Filson Purchase

Filson displays a 10% off offer through its onsite welcome-style offer module. The offer appears as an accept-offer prompt on Filson pages rather than as a publicly listed coupon code.

Get Deal

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