Name: Malus micromalus/Malus robusta seeds 1kg
Brand: Shanghai Touchhealthy seeds shop
SKU: T180
Price: 80.00 USD
Availability: InStock

Description

Malus robusta seeds, Siberian crabapple seeds, eight-edge begonia seeds, apple grafting rootstock seeds, ultra cold hardy deciduous tree seeds, northern winter-resistant landscape tree seeds, slope protection afforestation seeds, spring flowering ornamental tree seeds, winter persistent fruit tree seeds

Product Description

Plump full Malus robusta seeds maintain stable germination activity. Its common name is Eight-edge Begonia / Siberian Crabapple, a natural hybrid crabapple of Malus baccata × Malus prunifolia, native to North China, belonging to Rosaceae Malus deciduous arbor. It blooms clusters of pink-white single flowers in April-May with strong ornamental value; small round red fruits hang densely on branches and persist through the whole winter, greatly enriching winter garden scenery.

This variety features top-level comprehensive adaptability: extremely strong cold resistance (safe outdoor overwintering at -35℃), drought resistance, barren tolerance, salt-alkali resistance and disease resistance, the most ideal apple grafting rootstock in northern China, which can improve apple tree cold hardiness and stress resistance significantly抖音百科. The developed fibrous root system firmly anchors loose hillside soil to prevent soil erosion and landslide risks. It is widely applied for commercial apple nursery rootstock breeding, northern urban roadside greening, park spring flowering scenic belts, barren mountain ecological restoration forests and windbreak shelterbelts. It adapts to neutral, slightly acidic and slightly alkaline loam soil; only low-lying long-term waterlogged land and heavy compacted clay soil should be avoided to prevent root rot. Daily maintenance is low-management, mainly ensuring full sunlight and timely rainy season drainage, a multi-purpose tree integrating grafting rootstock, flower viewing, winter fruit appreciation and ecological soil conservation.

Planting Instructions

1. Soil Preparation

Mix garden loam, coarse river sand and decomposed organic fertilizer evenly to make breathable planting substrate. It has high tolerance to soil pH, neutral to slightly alkaline soil performs best. Build raised seedbeds for sowing to guarantee rapid water drainage and avoid long-term soil water saturation. Hardened heavy clay soil will inhibit root growth and seedling vigor, not recommended for seedling raising.

2. Seed Pre-treatment

Malus robusta seeds have deep physiological dormancy, 90 days low-temperature wet sand stratification is mandatory for normal germination.

Remove fruit pulp completely, screen out shriveled, insect-damaged and floating empty seeds via water floating test;
Disinfect seeds with dilute potassium permanganate solution for 30 minutes, then soak in room-temperature clean water for 24 hours for full water absorption;
Mix seeds with moist river sand at 1:3 volume ratio, store in 1–5℃ refrigerated environment for 90 days, stir the sand-seed mixture every 2 weeks to keep ventilation and moderate humidity;
Sow in early spring when seed coats crack and white radicles break through. Autumn outdoor direct sowing is alternative, relying on natural winter low temperature to finish dormancy breaking automatically.

3. Sowing Method

Adopt drill sowing on seedbeds, bury seeds 1cm deep in moist substrate, cover thin fine soil on surface and gently compact topsoil, water thoroughly once after sowing. Seedling stage needs slight shading to avoid extreme midday sun scorch on tender leaves. When seedlings grow 4–5 pairs of true leaves, transplant into nutrient bags for container cultivation, greatly improving survival rate of field planting and later grafting operation. Early spring after frost disappearance is the optimal sowing window.

4. Germination Condition

Keep substrate slightly moist without standing water, optimal germination temperature 15℃–25℃. Concentrated seedling emergence completes within 45–80 days after sowing. Cover breathable plastic film before sprouting for heat and moisture retention, lift film regularly for daily ventilation to prevent high-humidity damping-off and seedling mildew.

5. Daily Maintenance

Watering Frequency

Seedling stage: Keep soil evenly damp, water once every 4–6 days in hot dry summer, once weekly in spring and autumn.

Mature trees: Water once every 8–12 days under continuous drought; stop watering on rainy days and drain all accumulated water thoroughly.

Drought Tolerance

Excellent drought resistance. After root system fully established in the second year, adult trees can endure long seasonal dry spells with almost no supplementary irrigation needed.

Pest & Disease Prevention

Common diseases: Apple powdery mildew, leaf spot, root rot caused by waterlogging; Common pests: aphids, red spiders, leaf-eating caterpillars, longhorn beetles.

Control methods: Strictly control watering volume to maintain soil permeability; prune overly dense inner branches to boost canopy air circulation; remove diseased leaves and dead branches timely and spray low-toxicity fungicides for fungal diseases; apply standard safe insecticides to eliminate harmful pests.

Other routine management: Full sunlight over 6 hours daily is required for robust seedling growth, abundant flowering and heavy fruiting; shaded environment leads to thin seedlings and poor flower/fruit yield. Trim crossed messy branches annually in dormant period to cultivate straight trunk suitable for apple grafting. Apply diluted balanced compound fertilizer once in early spring and once after leaf fall every year to enhance tree vigor.

Specification

Plant Name: Siberian Crabapple / Eight-edge Begonia
Botanical Name: Malus × robusta (Malus robusta)
Plant Type: Ultra cold-hardy deciduous crabapple ornamental & rootstock tree
Mature Height: 8–12 Meters
Flowering & Fruiting: April-May blooming, small red fruits persist on branches all winter, seedlings can be used for grafting in the 2nd year
Germination Temperature: 15–25℃
Growing Temperature: -35℃ ~ 38℃, top frost resistance for northern China
Light Requirement: Full Sun, tolerate slight partial shade
Soil: Well-drained loam (acid/neutral/alkali adaptable), forbid long-term waterlogging
Planting Difficulty: Moderate
Core Features: The best cold-resistant apple grafting rootstock, gorgeous spring pink-white flowers, red ornamental fruits lasting through winter, strong drought/salt-alkali/barren resistance, perfect for northern landscape greening and slope ecological protection projects

FAQ

Q1: Can Malus robusta survive extremely cold winters in Northeast and Inner Mongolia?

A1: Definitely yes. It can withstand minus 35℃ extreme low temperature and safely overwinter outdoors in all northern frigid regions without any anti-freezing protection measures.

Q2: Is cold moist sand stratification required for its seeds?

A2: Absolutely necessary. Deep seed dormancy can only be broken by 90 days low-temperature wet sand treatment; insufficient chilling will result in extremely low, uneven germination rate.

Q3: Two most critical planting taboos?

A3: Long-term soil water accumulation causes fatal root rot; long-term insufficient sunlight leads to weak seedlings and poor grafting compatibility.

Q4: Core application values of mature Malus robusta trees?

A4: Primary rootstock for apple grafting cultivation, spring flowering landscape trees, winter red fruit ornamental trees, northern cold-resistant roadside green trees, mountain slope soil and water conservation ecological forest.

Q5: Suitable for novice growers?

A5: Friendly for beginners in cold northern areas. Key operation points: full 90-day cold stratification pretreatment before sowing, well-drained loose soil and full sunlight planting location.

Malus micromalus/Malus robusta seeds 1kg