Premium Double Mint Seedlings: Elevate Your Garden with Nature’s Refreshing Bounty

Double Mint, a hybrid of spearmint and apple mint (Mentha spicata × Mentha suaveolens), is a fragrant and versatile herb used in teas, culinary dishes, and aromatherapy. It has a strong minty flavor with a hint of sweetness. Mint has various uses, including culinary, medicinal, and cosmetic purposes. In the culinary industry, mint is a popular herb used to add flavor to dishes such as tea, salads, sauces, and meat. In the medicinal industry, mint is used to treat various ailments such as indigestion, respiratory disorders, and headaches. Mint is also used in cosmetic products such as toothpaste, mouthwash, and skincare products due to its refreshing scent and anti-inflammatory properties. Below is a detailed guide prepared by Seed Farm Kenya to successfully growing Double Mint.

Counties Where Double Mint Has been Grown Successfully

Double mint requires some specific ecological conditions to successfully grow in certain parts of the country. This however is adjustable but the following regions have proven totally viable for double mint cultivation: Kiambu, Murang’a, Nyeri, Nakuru, Baringo, Narok, Machakos, Kitui, Makueni, Kakamega, Bungoma, and Vihiga counties.

Choosing the Right Growing Conditions

Temperature:

Double mint thrives in temperatures between 55°F–70°F (13°C–21°C) although it is fairly adaptable. It can survive light frosts (down to 28°F/-2°C), but prolonged freezing kills the plant. Double mint tolerates heat up to 85°F (29°C), but growth slows, and leaves may wilt if too hot. Provide afternoon shade in hot climates to prevent scorching and in cold regions (below Zone 5), mulch heavily or move potted mint indoors.

Rainfall

Double Mint thrives in moist but well-drained conditions. Optimum rainfall ranging at 1000–15oomm annually is required with supplementary irrigation during dry spells. Excess rainfall causes root rot, fungal diseases (like mint rust) and weak growth due to waterlogged soil. This can be controlled through mulching, proper drainage and proper spacing. Low rainfall amount lead to stunted growth, bitter-tasting leaves and increased pest susceptibility like spider mites which thrive in dry air. Watering or drip irrigation for consistent moisture is recommended as well as mulching and shade clothing.

Sunlight Requirements 

Double Mint thrives in moderate sunlight but can adapt to different light conditions. It normally thrives best with 4–6 hours of direct sunlight daily. Too Much Sun leads to curling of leaves, brown edges or bleach since the soil dries too quickly. Too Little Sun leads to stretched, leggy stems, small, pale leaves and a weak minty aroma.

Soil Requirements

Double mint thrives in well-prepared soil that provides good drainage, fertility, and the right PH level. The best soil is loamy soil (a mix of sand, silt, and clay) with good organic matter although alternatively, sandy loam or well-draining potting mix for container planting will also do well. Avoid heavy clay as it retains too much water or pure sand as it dries out too quickly. The ideal soil PH ranges at 6.0–7.0 (slightly acidic to neutral) since mint absorbs nutrients best in this range.

Pro Tip: Soil testing for nutrients and PH is very important and Seed Farm Kenya will ensure this is done accurately then have their trained experts advise you accordingly to ensure success once you start growing your mint plants. If the soil is too acidic (below 6.0), add garden lime or wood ash to raise PH and if it is too alkaline (above 7.0), mix in sulfur, peat moss, or composted leaves to lower PH.

How to Enrich Soil:

Before planting: Mix in compost or well-rotted manure (1–2 inches deep).

During growth: Apply a balanced fertilizer (10-10-10) every 4–6 weeks (optional).

Organic options: Use fish emulsion, worm castings, or compost tea.

Propagation

Mint propagation can be done through seeds or cuttings, with cuttings being the preferred method due to their higher success rate. If planting seeds, sow them directly into the soil at a depth of 1cm to 1.2 cm, spacing them 20cm x 20cm apart. Cover the seeds with soil, water thoroughly, and keep the soil moist but not waterlogged. If planting cuttings, the 7cm stem cuttings should be obtained from healthy plants. Remove the lower leaves, leaving only 2 to 3 leaves at the top. Dip the cut end in rooting hormone powder. Plant the cuttings in well-prepared beds or in pots filled with rich soil burying the lower (1/3) of the stem. Water thoroughly and keep the soil moist until the cutting roots. Alternatively, sourcing of planting materials should be from certified sources like Seed Farm Kenya.

Planting

Plant mint cuttings or seedlings 30-45 cm apart in rows spaced 60-75 cm apart. The best time to plant mint is during the rainy season (March-May or October-December in most parts of Kenya). If irrigation is available planting can be done all year-round.

Pro Tip: To prevent mint from spreading uncontrollably, plant them in raised beds or using barriers around the planting area.

Watering & Feeding

Keep soil consistently moist but not waterlogged. Water when the top inch of soil feels dry and reduce watering in winter to prevent root rot. Another technique is using mulch. Mulch retains soil moisture and suppress weeds.

Fertilization

Apply a balanced liquid fertilizer (10-10-10) every 4–6 weeks. Alternatively, use compost tea or organic fish emulsion. However, avoid excessive nitrogen. Excessive nitrogen reduces essential oil content.

Weed Control

Mint require shallow cultivation to avoid damaging plant root system. This is done when the weeds are small to prevent the weeds from competing with the target crop for growth factors. You can also use the mulching technique. Mulching suppresses weed growth.

Pests & Diseases

Double Mint is generally hardy but can be attacked by pests and diseases, especially in humid or poorly ventilated conditions. Below is a detailed guide on managing these issues.

Common Pests of Double Mint

Aphids

Aphids can be identified as tiny green/black insects clustered on new growth. They form a sticky residue (honeydew) leading to sooty mold. They lead to curled, yellowing leaves and stunted growth. Treatment involves spraying off with a strong water jet, applying insecticidal soap or neem oil and introducing ladybugs (natural predators). Prevention entails encouraging beneficial insects (lacewings, hoverflies) and avoiding over-fertilizing (excess nitrogen attracts aphids).

Spider Mites

Can be identified as tiny red/brown mites under leaves. They form fine webbing on stems with leaves developing yellow speckles. They lead to leaves drying out and dropping prematurely. Treatment involves spraying with water + neem oil (every 3–5 days) and use of miticides (for severe infestations). Prevention involves increasing humidity as mites thrive in dry conditions and regularly misting leaves (if grown indoors).

Mint Flea Beetles

Identifiable as small, jumping black beetles causing leaves to have tiny shot-holes. They cause the plants to have reduced photosynthesis and weak plants. Treatment involves application of diatomaceous earth (food-grade) and use of pyrethrin-based sprays. They can be prevented through the use of floating row covers early in the season and rotating mint planting locations yearly.

Cutworms & Caterpillars

Identified through chewed leaves, stems cut at the base. Treatment involves handpicking at night as they’re nocturnal and application of Bacillus thuringiensis (Bt) (organic solution). Prevented by placing cardboard collars around seedlings.

Common Diseases of Double Mint

Mint Rust (Puccinia menthae)

Symptoms include orange/yellow pustules on undersides of leaves with the leaves turning brown and dying. The disease can be treated by removing and destroying infected plants and application of copper fungicide. Prevention entails avoiding overhead watering and ensuring good air circulation.

Powdery Mildew

A White, powdery coating on leaves is an indication of this disease. The disease can be treated by spraying with baking soda solution (1 tsp baking soda + 1 quart water) and applying a sulfur-based fungicide. The disease can be prevented by spacing plants properly for airflow and watering at the base (not leaves).

Root Rot (Fungal)

Symptoms of this disease infestation include wilting, yellowing leaves and black, mushy roots. The disease can be treated by removing affected plants and repotting in fresh, well-draining soil. It can be prevented by avoiding overwatering and using containers with drainage holes.

Tips for Healthy Double Mint

Keep plants vigorous (healthy mint resists pests better).

Sanitize tools to prevent disease spread.

Rotate crops if planted in-ground.

Health Benefits of Double Mint

Double Mint, a hybrid of spearmint and apple mint, offers a refreshing taste along with numerous health benefits. Rich in essential oils, antioxidants, and bioactive compounds, it has been used in traditional medicine for centuries. Below are the key health benefits of consuming Double Mint.

Digestive Health

Relieves indigestion & bloating as it contains menthol, which relaxes stomach muscles and reduces gas and it also stimulates bile flow, aiding fat digestion. It also reduces nausea & motion sickness by chewing fresh leaves or drinking mint tea. It also acts as a natural antispasmodic, reducing intestinal cramps.

Respiratory Health

Menthol contained in mint acts as a natural decongestant. Inhaling steam with mint leaves can relieve sinusitis. Helps with asthma & allergies as it contains rosmarinic acid, which has anti-inflammatory effects and it may also reduce allergic reactions by blocking histamine release.

Oral Health

Freshens Breath Naturally as it has antibacterial properties fight bad-breath-causing bacteria. It is also used in chewing gums and mouthwashes. It also reduces plaque and gingivitis due to antimicrobial effects.

Pain Relief & Anti-Inflammatory Effects

Applying diluted mint oil to temples may ease tension headaches. Menthol has a cooling effect, reducing soreness when applied topically.

Mental Health & Cognitive Benefits

Aromatherapy with mint oil lowers cortisol (stress hormone) and also mint tea can have a calming effect. The scent of mint enhances concentration and memory.

Immune System Support

Double mint contains flavonoids, polyphenols, and vitamin C, which combat free radicals. Again, the antibacterial & Antiviral Properties of mint are effective against E. coli, Salmonella, and cold viruses.

Weight Management

Mint’s aroma can reduce cravings and overeating thus regulating weight and it is often used in weight-loss teas. Mint intake may slightly increase fat-burning enzymes.

Skin & Hair Benefits

Mint has anti-inflammatory effects on acne, insect bites, and rashes. Mint oil stimulates blood circulation in the scalp promoting hair growth.

Why settle for ordinary herbs when you can grow Double Mint. A powerhouse of freshness, health benefits, and effortless growth?

Bursting with Flavor – Perfect for teas, cocktails, cooking, and aromatherapy.
Natural Medicine – Soothes digestion, boosts immunity, and relieves stress.
Garden Superstar – Fast-growing, hardy, and pest-resistant.

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