Polyanthes tuberosa - Mexican Single Flowered Tuberose
Cultural Tips & Growing Information
Tuberose are Zone 8-10 plants, and can be planted anytime of the year in these zones.
In Zones 6 & 7 or colder, set out plants once all danger of frost is past. The tubers may be started in pots indoors 4-6 weeks prior to last frost date. Leave the pots outside once evening temperatures reach 60 degree F.
In the garden plant in full sun, plant in well drained soil, with adequate moisture. They are lovers of warmth and respond well to additional fertilizer. High organic soils are best!
For patio plants the tubers may be set in pots and left to grow for the season, bringing indoors to overwinter. Plant in container large enough to allow for expansion of tubers. You can leave in pots for up to 3 years before removing and separating the clumps.
Set plants 1-2 inches deep, cover with soil and water once. Do not over water. Once tops emerge and are actively growing water as needed if rainfall is not adequate.
Tuberoses tolerate a wide variety of soils, pH 5.5-7.0, and perform best in highly organic well drained soils.
They need moisture but do not tolerate soggy soils.
Bloom time is 90-120 days after planting, with established clumps blooming from mid- July to frost here at Plentygood Farm in NW Arkansas.
Spacing...2-3 per square foot, 18 per square yard, or 8-10 inches apart per in line row.
Zones 6 or colder Tuberoses should be lifted for overwintering. Dig and store tubers dry, either in cardboard box or net bag. Good air circulation is important. In pots simply bring in after frost, do not water and keep in a cool dry location away from light.
If left in the ground, dig and separate every 2 years. Can remain in the ground longer although clump will become croweded and flower stems become smaller.
Storing the corms
Best stored in a dry cool location, 38 - 55 degrees Fahrenheit with low humidity is ideal, but be sure they stay above freezing. Because of our large quantity we also keep a fan going for circulation. We have stored them in boxes in the coolest room in the house and had great success. Check their condition from time to time to make sure they are not shriveling or molding. You can put them in peat, sand or even sawdust if necessary, but storing them dry is the key. Other good places to consider are in your garage, cellar, or basement as long as it does not freeze.