Thompson & Morgan Discount Codes for June 2026

How to Save at Thompson & Morgan

Join the Gardening Club if you order more than once a year

The annual maths is simple enough to settle the question quickly. At £10 for the year, the 10% off is recovered on your first order over £100. The £30 worth of vouchers distributed throughout the year add a further layer of value on top of the percentage saving. For anyone who orders seeds in spring, plug plants in summer, and bulbs in autumn, the membership covers itself several times over.

The membership is a one-off payment rather than a subscription, so you will not be auto-renewed. Set a reminder towards the end of your year to rejoin if you want the benefits to continue.

Always check your basket before completing an order

Thompson & Morgan regularly adds special basket offers at the checkout stage. These are heavily discounted plug plant collections, bulb packs, or vegetable and herb bundles that appear automatically or with a qualifying spend and are not advertised elsewhere. They frequently represent excellent value for money at prices of £4.99 to £5.99 for collections that would cost several times that separately.

Looking at your basket before clicking to pay is a habit worth developing, as these additions are time-limited and often sell out during busy periods.

Use the newsletter offer for your very first order

Before committing to Gardening Club membership, signing up to the newsletter gives you 5% off your first order. This is a simple way to save on an initial purchase while you assess whether you will shop frequently enough for the Gardening Club to be worthwhile. If your first order is large, the 5% may outperform the maths on immediately joining the club, particularly if you plan to wait several months before ordering again.

Act quickly on flash deals

Some of T&M’s best-value offers are time-sensitive flash deals on specific plant bundles, often run in partnership with newspapers and websites including MSE. These deals tend to run to midnight on a specific date or until a fixed number of units are sold, often 10,000 to 15,000 bundles. They price bare root plant collections at a fraction of the individual plant cost, and they genuinely sell out.

Subscribing to the newsletter and following T&M on social media are the most reliable ways to hear about these deals as they launch rather than after they have sold out.

Use the refer-a-friend scheme when introducing new gardeners

The 20% off refer-a-friend discount is one of the more generous in the gardening sector. Both you and the new customer receive the discount. If you are recommending T&M to a friend who is just getting into gardening and likely to spend a reasonable amount on their first order, this is worth setting up via your account rather than simply pointing them to the website directly.

What Sets Thompson & Morgan Apart

Thompson & Morgan has been supplying British gardeners since 1855 and the scale of that experience shows in ways that newer online plant retailers cannot replicate.

The breadth of variety selection is genuinely exceptional. T&M holds an extensive portfolio of exclusive and award-winning seed and plant varieties developed through its own plant breeding programme. You will regularly find varieties at Thompson & Morgan that simply do not exist anywhere else, either because they have been bred by the company or because T&M holds exclusive retail rights. For gardeners interested in trying something beyond standard supermarket seed packets, this matters.

The Price Promise with triple the difference refund signals genuine confidence in pricing. Most gardening retailers make no price guarantee at all. Offering to refund three times the difference if the same product is found cheaper is an unusual commitment in this category, and one that removes the anxiety about whether you are paying a fair price.

Plants are dispatched at the right time for planting, not the right time for logistics. Thompson & Morgan stages its plant dispatch to match the growing calendar. Bare root plants go out when dormant, plug plants when temperatures allow, and bulbs at the optimal planting window. This occasionally means waiting longer than you might expect from an online retailer, but it is done in the interest of the plant arriving in the best possible condition to establish in your garden. Understanding this avoids frustration and distinguishes T&M from retailers that dispatch regardless of whether it is the right moment for the plant.

The horticultural clubs and societies scheme is a meaningful commitment to the gardening community. Up to 50% off seeds for organised gardening groups is a generous provision that reflects the company’s roots in the seed trade and its long relationship with serious British gardeners. It is not a commercial offering dressed up as community engagement but a programme that has existed in some form for decades.