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Every product on our site is sourced, crafted, and shipped from within the United States. No exceptions.
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The Seeds In A Cup® Black Locust Tree Grow Kit is a complete seed-to-sprout system for growing Robinia pseudoacacia at home. Curated by Kevin Bruce, expert horticulturalist, this kit gives you everything to grow your own black locust tree from a single seed. A rewarding long-term project for patient gardeners and families who want to watch something extraordinary grow.
Rated Difficulty Level 1-2 - great for curious beginners following included instructions. Germination typically occurs in 7-21 days. Plants can reach 40-80 feet at maturity in full sun (6-8 hours daily).
Note from Kevin Bruce, Horticulturalist: Robinia pseudoacacia seeds require cold stratification to break dormancy. Full instructions included in your kit.
No extra supplies needed. Just add water and sunlight.
| Scientific Name | Robinia pseudoacacia |
| Plant Type | Deciduous Hardwood Tree |
| Difficulty Level | Beginner to Intermediate |
| Germination Time | 7-14 days at 70-80F (after scarification) |
| Mature Height | 40-80 feet |
| Sunlight Needs | Full Sun (6-8 hours daily) |
| USDA Hardiness Zones | 4-8 (Outdoor); All Zones (Indoor) |
| Planting Season | Spring |
| Cold Stratification | Required (instructions included) |
| Seeds Included | 2-7+ Seeds |
Every kit includes premium non-GMO Robinia pseudoacacia seeds, real loose potting soil, a recyclable planter with humidity lid, and growing instructions by Kevin Bruce. No additional supplies needed.
Robinia pseudoacacia seeds typically germinate in 7-21 days. Plants can reach 40-80 feet at maturity. Light, temperature, and watering affect growth rate.
Yes! This kit is designed for indoor growing. Black Locust Tree needs full sun (6-8 hours daily). A south-facing window is ideal. Grow lights can supplement in lower-light spaces.
Every kit is hand-assembled and ships from Cleveland, Ohio, USA. We are a Made in USA company using American-sourced materials.
Our 100% Growth Guarantee means if your seeds don't germinate, we replace them free. We batch-test all seeds in Cleveland for high germination rates.
Complete seed starter kits for first-time growers to experts. Premium loose potting soil, high-germination non-GMO seeds, and clear instructions in 100% recyclable packaging. Hand-assembled in Cleveland, Ohio with a 100% Growth Guarantee.
Expert Guidance: Growing instructions developed by Kevin Bruce, expert horticulturalist.
Every product on our site is sourced, crafted, and shipped from within the United States. No exceptions.
Our supply chain never leaves the country. That means no surprise costs passed on to you.
Every purchase puts money directly into the hands of American workers, small businesses, and family-run shops.