10PCS Pre-Stratified Blackberry Seeds Outdoor Plants Color of fruit: Black, red. Weight: 10g The fruit is rich in nutrition: Water: 88.0~88.8% .Soluble solid: 6.5~8.5% .Sugar: 5.5~7.0%. Organic acid: 1.2~1.4% .Crude Protein:1.5~1.7% .Vitamin C: 8.5~10.5mg/100g .Vitamin E: 3.0 mg/100g .Vitamin K: 0.08~0.11 mg/100g .Vitamin B1: 0.08 mg/100g .Vitamin B2: 0.06 mg/100g .Selenium: 2.71g/g .Amino-acids: 1000mg/100g Blackberry fruit nutrition is rich in all kinds of amino acids and trace elements necessary to human body, have promote blood clotting function, anti-aging, enhance immunity, promote brain metabolism, step-down fall hematic fat and anti-arrhythmic function, at the same time, the blackberry is a kind of very good honey plant. Cultivation techniques: 1. Because blackberry seed skin is thick, usually germination time longer, if direct seeding in the growth medium, will affect the germination rate. Use of gibberellic acid soaking seeds, then sprouting, it will be better. 2. Suitable for sprouting around 25  temperature, can improve the germination rate. 3. Planting the blackberry is suitable for any well drained soil. After transplanted into the ground, add enough organic fertilizer in the soil, and improve soil water retention so as to spengd the whole summer. At the same time the blackberry need to keep the soil moist during the summer. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Please consider this before the purchase. Please allow 1-2cm differs due to manual measurement