Greenhouse Product News

April 2020

The business magazine for commercial growers

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28 APRIL 2020 GPNMAG.COM CULTURE REPORT Stunning in containers as well as the landscape, this series makes a bold statement with festive colors on vigorous plants. BY ALICAIN S. CARLSON AND KEITH FRANCIS Bandolero Lantana Series B andolero lantana (Lantana camara) was bred to have large flowers and a vigorous branching habit. It's an excellent series for large containers, premium summer combos and the landscape. It has an easy, mounded habit reaching 18 to 22 inches in height and width in the garden. Bandolero has six festive colors: Pink, Cherry Sunrise, Guava, Red, White and Pineapple. Bandolero has the same mounding habit with about 20 to 30% more vigor than Bandana, making it ideal for Northern regions that need more vigor and Southern regions that want a big, bold finish in a large container. PROPAGATION Be sure to prioritize sticking your lantana cuttings shortly after arrival, as they do not tolerate extensive storage time. Place shipping boxes in the cooler until ready to stick. Ideal temperatures for lantana cuttings are between 48° F and 55° F. Lantana cuttings can be damaged if stored at temperatures below 45° F. Syngenta ships each of its lantana boxes with an EthylBloc sachet inside to protect your cuttings from the harmful effects of ethylene making sure you get the highest-quality product. Rooting hormone. Stick into a 105-cell tray or larger. Once stuck, root emergence should begin in 10 to 12 days. We recommend a 0.1% (1,000-ppm) IBA dip to the cutting stem. Be careful not to coat the leaves or entire cutting — excess application can cause burning and damage to the cutting. Another option is to apply an overhead sprench using water-soluble K-IBA to the cuttings (penetrating the rooting media) at 250 to 300 ppm 24 to 48 hours after sticking. Do not use overhead applications of alcohol-based IBA solutions. Plugs should finish in four-and-a-half to five weeks for a 105-cell tray; add more rooting time for significantly larger plug sizes. Irrigation. Mist schedules vary depending on light and temperature conditions. Apply just enough moisture to rehydrate the cuttings and keep them from wilting. Cuttings should be hydrated and in a non-wilted stage within 24 hours after sticking. Cuttings that continue to wilt heavily after 24 hours will callus unevenly and will be delayed in rooting. CapSil (spray adjuvant) can be sprayed on the cuttings at a rate of 2 to 4 ounces/100 gallons within one to two days after sticking to help with rehydration. Misting should be significantly reduced after three to four days and after cuttings become fully hydrated. Applying too much mist early on can lead to foliar disease and tissue breakdown. Temperature and light. Maintain media temperature at 72 to 74° F for the first three weeks. After roots are well developed, temperatures can be lowered to hold and tone the cuttings. Maintain a light intensity of 1,000 to 1,200 foot-candles (200 to 250 micro mols) for the first two weeks after sticking or until root development occurs. Light levels can be increased up to 3,000 foot candles (600 micro mols) as rooting increases and the cutting matures. If monitoring your light levels using moles, a Daily Light Integral (DLI) of 4 to 6 mols/day for the first two weeks after sticking or until root development occurs is recommended. DLI can be increased to greater than 12 mols/day after root formation. Nutrition and growth control. Begin fertilization at 100-ppm nitrogen when roots become visible. Rates can be increased up to 200-ppm nitrogen after roots become well-developed. Use primarily Cal-Mag Plus (calcium nitrate + magnesium nitrate) fertilizers in propagation to prevent unwanted stretch. The media EC should be 1.4 to 2.0 (Pour Thru) and pH of 5.8 to 6.2. Approximately 16 to 18 days after stick, a tank-mix spray of Florel (350 ppm) + B-Nine WSG (2,500

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