Costco May 2026: Best New Plants To Buy This Month

Every month, Costco comes out with new products that save members money without sacrificing quality. For gardeners, May is a key month for purchasing and planting new garden additions, and Costco's May 2026 plant selection won't disappoint. From houseplants to transplant-ready seedlings, these new products are hitting the shelves just in time for planting season. This year, Costco is selling top-of-the-line plants online from some of the most well-known gardening brands, including Heirloom, Costa Farms, and Alder & Oaks. 

Members are already scouring the shelves in stores for the best new plants to buy this month, but Costco also has a wide selection of live plants available for delivery through online-only deals. We scoured the most recent additions to Costco's May 2026 plant selection, and we found 13 flowers, shrubs, fruit trees, and houseplants that members are already raving about, including blueberry plants, Oleander flowering bushes, roses by Heirloom, and even potted pothos plants, which are among the highest-rated houseplants to get at Costco. While most of these plants are listed as online only deals, it may be a good idea to check your local warehouse before purchasing online if you are concerned about shipping damage for more delicate items. Each warehouse has a different selection of items that may be worth your time.

Costco just started selling a two-pack of Alder & Oak Blueberry Plants that are ready for planting, which is perfect for cooler climates that are seeing the last signs of frost pass in May. While the specific variety is not listed, perennial blueberries can be planted in the ground in USDA Hardiness Zones 4 to 9. They may also be suitable for container growing in other zones. These plants can only be purchased online and take up to seven days to be delivered. You can expect them to be between 6 and 12 inches upon delivery.

The Strong and Stunning Collection by Heirloom features nine varieties of Heirloom roses, including 'Parfuma Earth Angel,' 'Carefree Wonder,' 'Iceberg,' 'Sunbelt Savannah,' 'Sunbelt Plum Perfect,' 'Zephirine Drouhin,' 'Morden Blush,' 'Lyda Rose,' and 'Bonica.' These roses are sold as single, own-root potted roses that are ready to be planted as soon as they arrive. Heirloom takes care to prep each plant before shipping so it arrives healthy and ready to go in the ground. Varieties from this collection can be hardy in Zones 3 to 10 depending on your choice. 

The new Alder & Oak Staked Star Jasmine plant is undoubtedly one plant to hit Costco shelves that you won't want to miss in May. According to the Costco website, this online-only plant can get shipped to your house for only $84. However, recent shoppers have reported finding similar plants — though they may not be Alder & Oaks — in-store at even lower prices. The online-only Alder & Oaks star jasmine plant is shipped as a 2 or 3-year-old plant standing approximately 36 inches tall and ready to be planted in the ground in Zones 7 to 11.

Another online-only deal that you can find at Costco in May is this 2-pack of Costa Farms Oleander (Nerium oleander). Oleander is a perennial flowering bush in Zones 8 to 10, but it can be grown in container gardens in cooler climates. If you're looking for a low-maintenance plant that produces stunning blooms in spring and fall, learning to grow and care for oleander may be the right choice for you. Costco ships these young oleander bushes at a height of roughly 26 inches in nursery pots, so you can easily transplant them to the ground or containers.

The Alder & Oak Little Miss Figgy (Ficus carica 'Majoam' Little Miss Figgy) at Costco is another great deal to look out for in May. Online, members can purchase two potted 'Little Miss Figgy' trees for $95, which is a steal compared to competitor pricing at $72 for just one. This dwarf fig tree grows to be about 5 feet tall in Zones 7 to 10, which also makes it ideal for container gardening in cooler climates. The plant is shipped at 16 to 22 inches tall in nursery containers, so it is ready for transplant.

Another fruit tree that you can get at Costco in May, the Alder & Oak Cara Cara Orange Semi-Dwarf Tree (Citrus sinensis 'Cara Cara') is known for being sweeter than normal oranges, and it can be grown in containers. If you want to put it in the ground, you can grow this perennial tree in Zones 8 to 11. It is shipped at a height of 24 to 36 inches, and it can grow up to 15 feet tall when fully mature. Costco makes this productive tree affordable at $100 compared to $120 from other retailers.

The new Syringa 'Miss Kim' lilacs (Syringa patula 'Miss Kim') by Fisher Farms are a great Costco plant for low-maintenance gardeners. With three plants in this online-only deal that can be planted in the ground in Zones 3 to 8, you can easily create an enchanting landscape. The plants are shipped as 2-year-old potted shrubs that can grow to be 7 feet high by 6 feet wide. 'Miss Kim' lilacs are considered much more compact than other varieties, which can grow to be between 15 and 30 feet tall.

Another member favorite from Costa Farms, Costco is selling an online-only Pothos in a Self-Watering Pot. Even though this is a new addition to the stores, members are already praising the plant for the healthy growth and the top-quality condition it arrives in when shipped to their homes. Self-watering pots are an affordable solution to keep your potted plants hydrated, and this plant comes pre-potted in one, making this already low-maintenance houseplant even easier to care for.

If you love climbing roses, you won't want to miss Costco's May 2026 event featuring the Top Climbing Roses by Heirloom. Until May 14, you can order one of Heirloom's top-rated climbing roses, including 'White Eden Climber,' 'Polka,' 'Don Juan,' 'Arborose Jasmina,' and 'Eden Climber.' The bushes arrive as a single own-root potted rose plant that is ready to plant in Zones 5 to 10. These roses are only available as long as supplies last. They have already gained the attention of members online and on social media who have praised them for the quality and packaging.

Another quality tree that you can use for a substantial privacy fence from Costco this May is the Alder & Oak Leyland Cypress (x Cupressocyparis leylandii). This tree is not for small spaces, but the fast-growing, dense foliage is great for natural borders in Zones 6 to 10. The Leyland Cypress arrives at a height of 24 to 36 inches and can grow up to 5 feet per year, reaching a mature height of 40 to 60 feet tall. Plus, it tolerates heavy trimming, so you can easily train it into any shape.

The New Zealand Lemonade Tree is a semi-dwarf citrus tree that is available at Costco this May. Unlike most lemon trees, the New Zealand lemonade tree is known for producing sweet lemons that are ideal for making natural lemonade without any added sugar. This heavy producer can be planted in the ground in Zones 9 to 11. It arrives as a 2 or 3-year-old plant standing about 30 to 36 inches tall and can grow to be between 10 and 15 feet tall when fully mature.

For something that can be used as a topiary feature, consider Costco's 3-pack of Spiral Dwarf Alberta Spruce trees. These perennial living works of art can elevate any landscape in Zones 2 to 8. They arrive as 3-year-old shrubs that can be kept in containers or planted in the ground. When they reach maturity, they can stand up to 8 feet tall. These shrubs are slow-growing and considered easy to care for.

For another Costco sale that features roses while supplies last, or until May 14, check out the Top Fragrant Roses by Heirloom. In this collection, you can get three plants from the Perfumed Pinks, Fragrant Creams, or Intensely Scented pairings. Depending on the variety, you can plant these roses in the ground in Zones 5 to 10. The Perfumed Pinks collection includes 'Princess Elise,' 'Amazing Grace,' and 'Parfuma Summer Romance.' Fragrant Creams includes 'Parfuma Madame Anisette,' 'Margaret Merril,' and 'White Gold.' Finally, the Intensely Scented collection includes 'Memorial Day,' 'Ebb Tide,' and 'Eleganza Beverly.'