Mulberry Morus alba

About Mulberry

Mulberry, locally called moras in the Philippines, is a fast-growing deciduous tree scientifically known as Morus alba, belonging to the family Moraceae — the same family as breadfruit, jackfruit, and fig. Originally cultivated for thousands of years in China as the sole food source for silkworms (Bombyx mori), mulberry has gained tremendous popularity worldwide as a superfruit tree prized for its sweet, juicy berries and health-promoting leaves. In the Philippines, mulberry farming is an emerging trend that combines high-value berry production with the potential for sericulture (silk production), making it one of the most exciting new crops for progressive Filipino farmers.

The tree typically grows 5 to 10 meters tall when left unpruned, with a rounded canopy of heart-shaped, serrated leaves that range from 5 to 15 centimeters in length. The berries are elongated, resembling miniature blackberries, and transition from green to white to red to deep purple-black as they ripen. Each berry is actually a cluster of tiny drupelets fused together along a central stem. When fully ripe, the berries are intensely sweet with a complex flavor profile that hints at grape, fig, and honey — making them irresistible eaten fresh or transformed into jams, wines, and preserves.

What makes mulberry particularly attractive for Philippine agriculture is the combination of its extremely fast growth (bearing fruit in just 1 to 2 years from cuttings), prolific production, adaptability to virtually any soil type, and the premium market value of its berries at 300 to 600 pesos per kilogram fresh. The leaves add another income stream — dried mulberry leaf tea is in high demand among health-conscious Filipino consumers for its purported blood sugar management properties. Add in the potential for sericulture programs, and mulberry becomes a triple-purpose tree offering berries, tea leaves, and silkworm fodder from a single planting.

History and Discovery

Morus alba was formally described by Carl Linnaeus in his landmark 1753 work Species Plantarum. The genus name Morus comes from the Latin word for mulberry, which itself derives from the Greek moron. The species name alba means "white" in Latin, referring to the color of the buds and some fruit varieties, though many cultivated forms produce dark purple-black berries. There are several Morus species — M. alba (white mulberry), M. nigra (black mulberry), and M. rubra (red mulberry) — but M. alba is the most widely cultivated globally and the species established in the Philippines.

The mulberry tree originated in China, where it has been cultivated for at least 5,000 years primarily for sericulture — the production of silk from silkworm cocoons. The Chinese silk industry was built entirely upon the mulberry tree, as silkworms feed exclusively on its leaves. Mulberry cultivation spread along the ancient Silk Road to Persia, the Mediterranean, and eventually throughout the world. Spanish and Portuguese colonizers introduced mulberry to the Philippines during the colonial period, though it remained a minor crop until recent decades when its nutritional value and economic potential were rediscovered by Filipino agricultural entrepreneurs.

In the modern Philippines, mulberry has experienced a renaissance since the 2010s. The Department of Science and Technology (DOST) has supported sericulture pilot programs in Bukidnon, Mindanao, establishing mulberry plantations for silk production. Simultaneously, health-conscious urban consumers in Metro Manila and Cebu have created strong demand for fresh mulberry berries, dried leaf tea, and processed products like mulberry jam and wine. What was once an obscure introduced tree is now becoming one of the most talked-about high-value crops in Philippine small-scale farming circles.

How to Plant Mulberry

Propagation methods: Hardwood cuttings (primary), Seeds, Air layering

Time to fruiting: 1 to 2 years from cuttings

Best planting season in the Philippines: June to August (onset of rainy season), though mulberry can be planted year-round with irrigation

Step-by-Step Planting Guide

1. Select your planting material. Obtain 20 to 30 cm hardwood cuttings from a healthy, actively fruiting mulberry tree — ideally a variety selected for berry production rather than one grown solely for leaf harvest in sericulture. Cuttings should be pencil-thick (about 1 cm diameter) with at least 3 to 4 visible nodes. Alternatively, purchase nursery-grown seedlings from agricultural supply centers or online plant sellers specializing in fruit trees.
2. Prepare cuttings for rooting. Strip all leaves from the lower two-thirds of each cutting to redirect energy toward root development. If rooting hormone powder is available, dip the base of the cutting in it, though mulberry roots readily even without this treatment. Plant cuttings 10 cm deep in a moist rooting medium of equal parts sand and compost, or directly into well-drained garden soil. Keep in partial shade and mist daily until new growth emerges in 2 to 4 weeks.
3. Choose the permanent planting site. Select a spot with full sun — at least 6 hours of direct sunlight daily for best berry production. Mulberry is remarkably adaptable to almost any soil type found in the Philippines, from clay to sand to volcanic loam. It tolerates slightly acidic to slightly alkaline conditions. Space standard trees 3 to 5 meters apart; for hedgerow-style production (heavily pruned), space 1 to 2 meters apart.
4. Transplant to the permanent location. Once rooted cuttings show vigorous new leaf growth (typically 4 to 6 weeks), transplant them to their permanent site. Dig a hole twice the width of the root ball and mix the backfill soil with a generous amount of compost or vermicast. Plant at the same depth as the original container, firm the soil gently, and water deeply immediately after transplanting.
5. Water and mulch during the establishment phase. Water every 2 to 3 days for the first month after transplanting, then reduce to weekly deep watering as the tree establishes. Apply a 5 to 8 cm layer of mulch (dried leaves, rice hull, or coconut coir) around the base to conserve moisture and suppress weeds. Avoid letting mulch touch the trunk directly to prevent stem rot.
6. Prune hard for maximum berry production. This is the most important step for Philippine mulberry growers focused on berry harvest. Once the tree reaches 1.5 to 2 meters, begin annual hard pruning during the dry season (January to February). Cut all branches back to 30 to 50 cm from the main trunk. Mulberry fruits on new wood, so hard pruning triggers an explosion of new fruiting branches. This keeps berries at a reachable height and can double or triple total yield compared to an unpruned tree.

Care Guide

Sunlight

Requirement: Full Sun

Mulberry produces the most berries and the sweetest fruit when grown in full sun with at least 6 to 8 hours of direct sunlight daily. It can tolerate partial shade (4 to 5 hours of sun), but berry production will be reduced and the fruit may be less sweet. For Philippine growers, most open garden areas, rooftops, and balconies with good exposure provide sufficient light. If growing primarily for leaf tea production rather than berries, partial shade is acceptable.

Water

Frequency: 2 to 3 times per week during dry season; reduce during monsoon

Mulberry is moderately drought-tolerant once established but produces significantly more fruit with consistent moisture. Water deeply 2 to 3 times per week during the dry season (March to May), ensuring the water penetrates at least 30 cm into the soil. During the rainy season, supplemental watering is rarely needed. Berry quality improves with even moisture — drought stress during fruit development can cause berries to be small, dry, and less flavorful. Avoid waterlogging, which can cause root diseases.

Soil

Type: Any — extremely adaptable (loam, clay, sand, volcanic)

pH Range: 5.5 to 7.5

One of mulberry's greatest strengths is its extraordinary soil adaptability. It thrives in virtually any soil type found in the Philippines — from heavy clay lowlands to sandy coastal areas to rich volcanic loam. It tolerates a wide pH range from moderately acidic to slightly alkaline. The only condition it truly dislikes is perpetually waterlogged soil with no drainage. For best berry production, enrich the soil with compost and ensure reasonable drainage, but do not worry about achieving perfect soil conditions — mulberry will grow where many other fruit trees fail.

Humidity and Temperature

Humidity: 50 to 85%

Temperature: 20°C to 38°C

Mulberry adapts well to the Philippine tropical climate, thriving at temperatures between 20°C and 38°C. Unlike many temperate fruit trees, Morus alba does not require a chilling period to initiate fruiting, making it perfectly suited to the Philippines where winters do not exist. It handles the high humidity of the monsoon season well, though prolonged wet conditions can increase fungal disease pressure on the berries. Good air circulation through proper spacing and pruning mitigates this issue.

Fertilizer

Mulberry is a fast-growing, heavy-bearing tree that benefits from regular fertilization. Apply balanced complete fertilizer (14-14-14) or organic fertilizer every 6 to 8 weeks during the active growing and fruiting season. Supplement with compost or vermicast top-dressing around the drip line quarterly. For berry production, a slightly higher-phosphorus formulation during flowering encourages more fruit set. Avoid excessive nitrogen before fruiting, as this promotes leaf growth at the expense of berries.

Pruning

Pruning is arguably the single most important management practice for berry-producing mulberry in the Philippines. Annual hard pruning during the dry season (January to February) involves cutting all branches back to 30 to 50 cm stubs. This seems extreme but is essential — mulberry fruits primarily on new growth produced in the current season. Hard pruning forces the tree to generate abundant new fruiting wood, resulting in more berries concentrated at a convenient picking height rather than scattered high in the canopy. After pruning, the tree will flush with vigorous new shoots within 2 to 3 weeks in Philippine conditions, with berries appearing 8 to 12 weeks later. For leaf-only production (sericulture), prune even more aggressively to maximize young, tender leaf output.

Growing Medium Options

Soil is the ideal and recommended growing medium for mulberry in the Philippines. The tree's extraordinary soil adaptability means it will thrive in virtually any garden soil — from clay to sand to volcanic loam — as long as basic drainage exists. For urban growers with limited ground space, mulberry can be successfully grown in large containers (at least 40 cm diameter pots) filled with a standard potting mix of garden soil, compost, and perlite or rice hull. Dwarf varieties are particularly well-suited to container culture. Hydroponic cultivation is theoretically possible for leaf production in large Deep Water Culture systems, though it is not commonly practiced for berry production due to the tree's size. Passive water culture (simply sitting in water) is not suitable as mulberry roots need oxygen and will rot in stagnant conditions.

Edible Uses and Nutrition

Edible parts: Ripe berries, Young leaves (cooked or dried for tea), Shoots

Culinary Uses

Mulberry berries are extraordinarily versatile in the kitchen and are enjoyed in numerous forms in the Philippines and worldwide. Fresh ripe berries are eaten as a premium snack fruit — their sweet, complex flavor combines notes of grape, fig, and wild berry. Beyond fresh eating, mulberries are processed into jam and preserves (popular among artisan food producers in Tagaytay and Baguio), mulberry wine and vinegar (a growing niche product), smoothie additions, ice cream and yogurt toppings, and dried berries used like raisins in baking and trail mixes. Mulberry leaf tea is one of the most popular health beverages in the Philippine wellness market — the dried leaves are steeped in hot water to produce a mild, slightly earthy tea traditionally used to support blood sugar management. Young mulberry leaves can also be cooked as a leafy vegetable similar to kangkong or alugbati, though this is less common in the Philippines than in East Asian cuisines.

Nutritional Highlights

Harvest season: In the Philippine climate, mulberry can produce multiple fruiting flushes per year — typically 2 to 3 major harvests annually, especially with proper pruning management. Berries are ready for picking when they turn deep purple-black and detach easily from the stem with a gentle tug.

Storage: Fresh mulberries are extremely perishable — this is the primary reason they command such high prices. They must be consumed or processed within 1 to 2 days of harvest as they bruise easily and begin to deteriorate rapidly. For longer storage, freeze berries immediately after harvest in a single layer on a tray, then transfer to sealed bags for up to 6 months. Drying, jam-making, and winemaking are all effective preservation methods. Mulberry leaves for tea should be harvested in the morning, washed, and dried thoroughly in a food dehydrator or sun-dried over 2 to 3 days.

Air Quality and Oxygen Production

Mulberry is a vigorous grower that produces significant biomass each year, translating into meaningful oxygen production and carbon dioxide absorption. Its fast growth rate — capable of adding 1 to 2 meters of new growth per year in Philippine conditions — means it is actively photosynthesizing at a high rate throughout the year. The dense canopy of large leaves provides excellent air filtration in urban and suburban settings, trapping particulate matter and producing fresh oxygen for the immediate surroundings.

CO₂ absorption: High

Mulberry's value for urban air quality extends beyond simple gas exchange. The tree's dense leaf canopy acts as a natural dust and particulate filter, making it an excellent choice for planting along busy roads, in schoolyards, and around residential compounds in Philippine cities and towns. Its rapid growth means newly planted trees contribute to air quality improvement within just 1 to 2 years, unlike slower-growing native hardwoods that take decades to develop significant canopy coverage.

Toxicity and Safety

Humans: Non-toxic (ripe berries and cooked/dried leaves); Mildly irritating (unripe berries and large quantities of raw leaves)

Pets: Non-toxic (ripe berries); mild GI upset possible from unripe fruit

Fully ripe mulberry berries (deep purple-black in color) are completely safe and highly nutritious for humans of all ages, including children. The leaves, when dried for tea or cooked as a vegetable, are also safe for consumption. However, unripe berries (white, green, or pale pink) contain compounds that can cause mild gastrointestinal upset — nausea and stomach cramps — if consumed in large quantities. Similarly, consuming large amounts of raw, unprocessed leaves may cause mild digestive discomfort. The white latex sap from the stems and unripe fruit can cause skin irritation in sensitive individuals. For practical purposes, simply wait until berries are fully ripe before eating (they should be deeply colored and detach easily from the stem), and always dry or cook leaves before consumption. Ripe berries are safe for dogs and cats in small quantities, though they may stain fur and surroundings.

Common Pests and Diseases in the Philippines

Pests

• Birds — the most common "pest" for mulberry growers. Birds love ripe berries and can strip a tree quickly. Net fruiting branches with bird netting during the harvest period, or harvest berries early in the morning before birds become active.
• Fruit flies (Bactrocera spp.) — may lay eggs in overripe berries left on the tree. Harvest berries promptly when ripe and remove any fallen fruit from the ground.
• Whiteflies — tiny white flying insects on leaf undersides that suck sap and excrete honeydew. Control with neem oil spray or yellow sticky traps placed near the canopy.
• Mealybugs — white, cottony insects on stems and leaf axils. Spray with insecticidal soap or rubbing alcohol solution. Prune and destroy heavily infested branches.

Diseases

• Powdery mildew — white powdery coating on leaves during dry weather with cool nights. Improve air circulation through pruning and apply sulfur-based fungicide if severe.
• Berry rot (Botrytis) — gray fuzzy mold on ripening berries during prolonged wet weather. Ensure good air circulation, avoid overhead watering during fruiting, and harvest promptly. Remove and discard affected berries.