This is a "Multiple Variation" style listing. Use the "Seed Qty" drop-down menu, above, to select quantity/weight. Choose from: 50 Seeds for $2.00 150 Seeds for $4.00 300 Seeds for $6.00 600 Seeds for $9.00 1,800 Seeds for $18.00 5,400 Seeds for $36.00 This item ships free when paid together with any other purchase. U.S Addresses Only. Japanese White Birch, Betula platyphylla japonica Whitespire, Tree Seeds Fast Growth, Hardy, Adaptable, Showy White Bark, Fall Color, Winter Interest, Cold Tolerant This White Birch is native to Manchuria, Korea and Japan. It is closely related to Betula pendula. It is a medium to large sized tree that typically grows to 30 to 40 feet tall with a pyramidal habit. This tree is noted for its white bark, thin spreading branches and slightly pendant branchlets. Ovate, glabrous, toothed, yellowish-green leaves to 3 inches long, have tapered tips. Fall color is yellow. Tiny monoecious flowers appear in early spring in separate catkins on the same tree. Yellowish-brown male flowers in drooping catkins to 3 inches long and greenish female flowers in smaller, upright catkins to 1 1/4 inches long. Female flowers are followed by drooping cone-like fruits containing numerous small winged seeds that typically mature in late summer. Young twigs have resinous glands. The Whitespire cultivar is more resistant to heat, drought and birch borers. Other Names: Asian White Birch, Betula platyphylla var. japonica whitespire Zone: 4 to 7 Growth Rate: Fast Plant Type: Deciduous Tree Family: Betulaceae Native Range: Manchuria, Korea, Japan Height: 40 to 50 feet Spread: 15 to 30 feet Shape: Pyramidal Bloom Time: March - April Bloom Color: Yellowish brown (male) and green (female) Flower/Fruit: Inconspicuous flowers in early spring followed by 1-1.5" fruit on drooping catkins Sun: Full Sun to Part Shade Water: Medium to Wet Maintenance: Medium Fall Color: Golden/yellow Drought Tolerance: Moderate Site Requirements /Soil Conditions: Best grown in medium to wet, well-drained, sandy or rocky loams in full sun to part shade. It needs consistently moist soils. Consider using soaker hoses and bark mulches to keep the root zones cool and moist. It needs little pruning, but if necessary, prune during the dormant season. Avoid pruning in spring when the sap is running. Performs best in cool northern climates where summer temperatures rarely exceed 75 degrees F. and where root zones are generally covered with snow throughout the winter. Culture: Birches adapt to a wide variety of soils, including winter-saturated soils. It looks sensational planted in a grove. Lower branches can be removed when they are small to show off the beautiful trunk, but in general, birches respond poorly to pruning. The best tactic is to plant the tree where is has plenty of space and leave it alone. Sowing Betula platyphylla japonica Seeds: The seeds of Japanese Whitespire Birch are very small. For best results, please follow the instructions in the order provided. Stratify: Cold 30-60 days, 40 Degrees F in a Moist Medium. Germination: Surface sow indoors, requires light for germination. Artificial Light is Recommended.For more information about seed pretreatment and growing trees and shrubs from seed, please download this .pdf:https://www.forestresearch.gov.uk/documents/1449/fcpg018.pdf Germination: Seeds Packets are labeled with seed name and sowing details. Seeds have not been pretreated unless specified in the listing. Seed is not a specific Cultivar (Variety) unless specified in the listing. Due to the many factors involved in successful germination, Seller cannot be responsible for buyers growing methods or mistakes. I have provided what I believe to be a good overview on this page (which you are free to print for further reference), however, it is still recommended to check specialist literature for more details and practices specific to your climate and soil conditions to avoid mistakes in the germination and growing process. Shipping and Discounts: All items are set up to automatically discount as follows: Any promotional offers are discounted by using the "Add to Cart "only.To qualify for any discounts, items must be paid together, on the same eCRATER invoice.If paid separately, no discounts will be applied though seller reserves the right to ship together.If there are any questions or concerns about the amount due, please message me before paying so I can address all of your concerns before there is a problem. Buyer assumes responsibility once payment has been made. International Buyer’s: It is the buyer’s responsibility to know their countries customs laws. Plant and plant materials including seeds may be restricted from importing to your country. Please check with your customs agency and or post office before purchasing. Upon purchasing this item Buyer accepts the risk of item being confiscated and/or destroyed by customs and Seller will not be held liable for this. If you are on my exclusion list it is because: “Plant and plant materials including seeds” are restricted from importing to your country, it is enforced by your country and there is a high rate of customs checking for this.