Cola plant 7 things you need to know about growing starts with understanding what this herb actually is and how to care for it successfully. The cola plant, scientifically Artemisia ‘Cola’, releases a genuine cola-like fragrance when you brush or crush its foliage, making it a novelty herb worth growing for scent and curiosity. If you’re deciding whether cola plant belongs in your garden, here are the practical essentials to grow it well.
Confirm you’re ordering the right Artemisia cultivar
The plant you want is Artemisia ‘Cola’, sometimes labeled as Artemisia dracunculus ‘Cola’. It is not a cola nut, a kola plant, or any actual cola-producing species. Artemisia is a genus of aromatic perennials and shrubs, and this particular cultivar was selected for its foliage scent.
Using the full botanical name when ordering seeds or nursery starts prevents confusion with other Artemisia varieties, which have different scents and growth habits. Search for “Artemisia Cola” or “cola plant Artemisia” to find the right cultivar. Many online seed catalogs and specialty herb growers carry it, though availability varies by region and season.
The cola scent requires physical contact with the foliage
The distinctive cola fragrance is real, but it will not reveal itself as you walk past the plant. You must brush your hand across the foliage, crush a leaf between your fingers, or gently rub a stem to release the aromatic compounds that create the cola scent. Simply walking past the plant won’t give you the full effect.
If you have the chance to visit a nursery or garden center where cola plant is on display, pinch a leaf and smell it before committing to a purchase. This sets realistic expectations and confirms you enjoy the scent. The smell is strongest on new growth and during the warmer months when the plant is actively growing.
Start seeds indoors 6 to 8 weeks before your last spring frost date
Cola plant seed germinates reliably indoors when given consistent warmth and light. Count back 6 to 8 weeks from your local last spring frost date to find your sowing window. For example, if your last frost is May 15, start seeds indoors between late March and early April.
Sowing and germination conditions
Sow seeds on the surface of a moist seed-starting mix in a shallow tray or cell pack. Do not cover the seeds; they need light to germinate. Keep soil temperature between 70 and 75 degrees Fahrenheit and provide 14 to 16 hours of bright light daily using a grow light or sunny south-facing windowsill.
Germination typically occurs within 7 to 14 days. Once seedlings emerge, maintain consistent moisture without waterlogging, and continue providing strong light to prevent leggy, weak growth. Seedlings are ready to transplant when they develop their first true leaves, usually 3 to 4 weeks after germination.
Hardening off and transplanting to the garden
When seedlings have developed 2 to 3 true leaves, pot them up into 4-inch containers filled with potting soil. Harden off seedlings by gradually exposing them to outdoor conditions over 7 to 10 days before transplanting into the garden after your last frost date. Space plants 12 to 18 inches apart in the garden or use individual 5 to 7 gallon containers for container growing.
Grow cola plant in full sun with fast-draining soil
Cola plant thrives in at least 6 to 8 hours of direct sunlight daily. Full sun encourages compact, bushy growth and stronger fragrance in the foliage. In hot climates (USDA zones 9 and above), afternoon shade can prevent excessive heat stress during peak summer.
Choosing between containers and in-ground planting
Cola plant grows well in both containers and garden beds. Container growing offers flexibility for moving plants to shade during extreme heat and easier control of soil drainage. A 5 to 7 gallon pot is adequate for a mature plant. In-ground planting works if your soil drains quickly; Artemisia varieties are prone to root rot in wet, heavy clay.
Soil drainage is critical to prevent root rot
Amend garden soil with coarse sand or perlite to improve drainage. Aim for soil that drains within a few hours after watering, not soil that stays boggy. If your native soil is clay-heavy, raised beds or containers are a better choice. For containers, use a potting mix rated for herbs or vegetables, which typically contains peat, compost, and perlite in proportions that support drainage.
Overwatering is the most common failure point with Artemisia. Yellow or brown leaves, wilting despite wet soil, and a musty smell from the pot all signal root rot from excess moisture. If you see these signs, check drainage holes, repot into fresh soil if needed, and reduce watering frequency.
Water deeply but infrequently, especially during midsummer heat
In midsummer, container-grown cola plant needs water more frequently than in-ground plants because pots dry out faster. Check soil moisture by inserting your finger 1 inch into the soil; water when it feels dry at that depth. In containers, this may mean watering every 2 to 3 days during hot spells. In-ground plants need deep watering once or twice weekly depending on rainfall and heat.
Underwatered plants show crispy leaf edges, pale foliage, and slow growth. If leaves feel papery and brittle, water thoroughly and check that drainage is adequate. During peak summer heat, mulch around in-ground plants with 1 to 2 inches of compost or straw to retain soil moisture and keep roots cooler.
Water in early morning so foliage dries quickly, reducing disease risk. Reduce fertilizing during drought stress; the plant is not actively growing and does not need extra nutrients when water is scarce.
Prune regularly in early summer to encourage bushier growth
Pruning shapes the plant and increases leaf production, giving you more foliage to brush and enjoy. Begin pruning in late spring or early summer, once the plant has established several sets of true leaves. Remove the top 1 to 2 inches of stem growth using clean pruners or scissors, cutting just above a leaf node.
Pinch or cut stems regularly throughout the growing season, removing no more than one-third of the plant’s total growth at a time. This prevents the plant from becoming leggy and woody. Each cut stimulates two new shoots to emerge below the cut point, creating a fuller plant with more scented foliage for harvesting.
Like pruning strawberries to encourage more growth, regular pruning of cola plant redirects energy into leaf production rather than woody stems. The result is a more compact, productive plant throughout the season.
Plan for winter dormancy based on your USDA zone
Cola plant is a perennial in zones 5 to 11, meaning it survives winter outdoors in most of the continental United States. In zones 5 and 6, the plant dies back to the ground in fall and regrows from the roots in spring. In zones 7 and warmer, it often retains some evergreen foliage through winter.
Winter care by zone
In zones 5 and 6, cut the plant back to 2 to 3 inches above soil level in late fall after the first hard frost. Apply 2 to 3 inches of mulch over the base to insulate the roots. In zones 7 and above, light pruning in fall is sufficient; the plant will regrow from existing stems in spring.
Container-grown plants in zones 5 to 7 should be moved to a cool garage or shed for winter, or left outdoors under heavy mulch. Prune back dead or damaged growth in late fall, leaving healthy green stems if present. Apply compost or shredded leaves as mulch once the ground freezes to prevent frost heave and protect the root crown. Remove mulch gradually in spring as temperatures warm.
Watch for spider mites and powdery mildew in hot, dry conditions
Spider mites and powdery mildew are the most common pests and diseases affecting Artemisia in summer heat. Spider mites thrive in hot, dry air and cause fine webbing on stems and yellowing leaves. Powdery mildew appears as a white coating on foliage and is more common in humid conditions or when air circulation is poor.
Early detection and treatment
Inspect plants weekly during summer. At the first sign of spider mites, spray the plant thoroughly with water from a hose to dislodge mites and remove dust that attracts them. For powdery mildew, mix 1 tablespoon of baking soda with 1 gallon of water and a few drops of dish soap, then spray affected foliage in early morning or late evening. Repeat every 7 to 10 days until the mildew clears.
Space plants at least 12 to 18 inches apart to allow air to flow between foliage. Avoid overhead watering, which wets leaves and creates conditions for fungal disease. Prune out any dead or crowded growth in the center of the plant to improve air movement. These simple steps prevent most pest and disease problems before they start, much like proper spacing and watering practices prevent issues with other garden herbs.
Questions about growing cola plant
What does cola plant taste like if you brew it as tea?
Cola plant foliage tastes mild and slightly bitter, without any cola flavor. Some gardeners brew it as an herbal infusion for curiosity, but it is grown primarily for its scent, not its taste. If culinary herbs are your goal, consider growing curry plant, which offers both fragrance and actual flavor in cooking.
Can you grow cola plant indoors year round?
Cola plant can be grown indoors under grow lights, but it requires at least 14 to 16 hours of bright light daily and good air circulation to prevent mildew. Indoor plants often become leggy and lose vigor over time. It is best grown outdoors in spring and summer, then moved indoors or allowed to go dormant in winter depending on your USDA zone.
Does cola plant spread or become invasive?
Cola plant does not spread aggressively or become invasive. It grows as a contained shrub and does not send out runners or self-seed prolifically. It is a well-behaved garden plant that stays where you plant it and is easy to remove if you decide it no longer fits your space.
How long does it take for seedlings to reach full size?
Seedlings started indoors 6 to 8 weeks before your last frost will reach a usable size by mid to late summer. A mature plant reaches 18 to 24 inches tall and wide within one growing season. Container plants may stay slightly smaller than in-ground plants, depending on pot size and water availability.
