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Valid The Sill Promo Codes for August 2026
✓agent-verified & updated·August 18, 2026
Today's Best The Sill Promo Codes:
23 offers in totalTake 9% Off Your Order at The Sill
Use this promo code to save 9% on qualifying orders at The Sill.
10% Off Eligible Purchases at The Sill
Apply this discount code to save 10% on eligible purchases at The Sill.
Save 10% on The Sill Orders
Enjoy 10% off on eligible purchases at The Sill with this code.
Weekend Plant Deal: Save Up to $30 on a Popular Summer Plant
The Sill's homepage links to a weekend offer featuring savings of up to $30 on a popular summer plant. The promotion appears as a time-limited site banner and is tied to a specific seasonal plant deal.
Peak Summer Sale: Up to $70 Off Patio and Tropical Plants
The Sill highlights limited-time Peak Summer savings on patio picks, citrus trees, and tropical indoor plants. The homepage promotes discounts of up to $70 on eligible seasonal plant selections.
Summer Solstice Sale: Up to 20% Off Sitewide
The Sill's Summer Solstice Sale offers up to 20% off plants, planters, and accessories across the site. Eligible savings are automatically reflected in the cart where applicable, and select marked-down products may stack with additional sale pricing.
First Order Offer: 10% Off When You Sign Up
New email subscribers can receive 10% off their first order from The Sill. The offer is presented as an ongoing signup benefit for customers joining the merchant's email list.
15% Off Corporate Gift Orders Over $10,000
The Sill offers 15% off qualifying corporate gifting orders over $10,000. The discount applies to the product total and excludes gift cards, shipping costs, insert fees, and taxes.
Plant Sale: Automatic Markdowns on Select Plants and Bundles
The Sills sale section features marked-down plants, planters, and bundles with reduced prices displayed on eligible items. Examples include select plant bundles, planters, citrus plants, and indoor favorites with sale pricing shown directly on product listings.
Free Grow Kit With Select Olive Trees and Meyer Lemon Trees
Select Olive Tree, Meyer Lemon, and Citrus Lovers Bundle purchases include a free GrowScripts care kit while supplies last. The qualifying products are grouped on The Sills Plant Care Kits collection page.
Weekend Plant Deal: Save Up to $30 on Summers Most Popular Plant
The Sills sale page advertises a weekend offer with savings of up to $30 on a featured popular summer plant. The offer is presented as a limited-time homepage and sale-page promotion.
Summer Solstice Sale: Up to 20% Off Sitewide
The Sills Summer Solstice Sale features up to 20% off indoor plants, outdoor plants, fruit trees, flowering vines, ceramic planters, and more. Eligible savings are reflected automatically where applicable.
First Order Offer: 10% Off for Email Subscribers
New subscribers can receive 10% off their first order after signing up for The Sills email list. The offer is presented as an ongoing signup benefit on The Sills site.
15% Off Corporate Gift Orders Over $10,000
The Sill offers a 15% discount on qualifying corporate gift orders over $10,000. The discount applies to the product total and excludes gift cards, shipping costs, insert fees, and taxes.
Sale Section Deals: Markdowns on Select Plants and Bundles
The Sills sale collection features discounted plants and bundles with sale pricing displayed on eligible items. Examples on the page include reduced pricing on select plant duos, planter duos, and houseplant bundles.
Other The Sill Deals & Offers
Summer Solstice Sale: Up to 20% Off Sitewide
The Sill sale page describes a limited-time Summer Solstice Sale with up to 20% off indoor plants, outdoor plants, fruit trees, vines, ceramic planters, and more. The page says eligible discounts are automatically reflected in the cart where applicable.
Peak Summer Sale: Up to $70 Off Tropical Houseplants
The Sill homepage lists a limited-time tropical houseplant offer with savings up to $70. Eligible sale items are shown with reduced prices directly on the site.
15% Off Corporate Gifting Orders Over $10,000
The Sill offers a 15% discount for qualifying corporate gifting orders over $10,000. The discount applies to the product total and excludes gift cards, shipping, insert fees, and taxes.
10% Off Eligible Purchases
Shop The Sill and save 10% on eligible purchases with this promo code.
Save Up to 30% Off at The Sill
Take up to 30% off your The Sill purchase when you use this coupon code.
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Get 10% Off Your Order at The Sill
Receive 10% off on qualifying The Sill orders when you check out using this code.
Take 10% Off Your Order at The Sill
Use this promo code to save 10% on eligible purchases at The Sill.
Get 10% Off Your Order at The Sill
Apply this discount code to save 10% on eligible purchases at The Sill.
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Locate the Code Box at thesill.com
The agents tested the code. Entering it is the one part we leave to you — here's exactly where the The Sill promo code goes at checkout.
Follow the shopper-submitted screenshots below to spot the The Sill promo box and apply your code. Miss a step and even a working code does nothing — so the agents mapped every one for you.
How to find
- 1.Go to thesill.com
- 2.Search for a product and add it to the cart
- 3.Click the cart icon or checkout button to proceed to the checkout page
- 4.Locate the 'Discount code or gift card' field in the Order Summary on the right side of the checkout page
How to use
Enter your code into the 'Discount code or gift card' field in the order summary on the right and click the 'Apply' button.
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The Sill Customer Support
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