Shrubs of the Year 11.12.18 2020 Growing & Landscape Guide GEM BOX Ilex glabra OSO EASY DOUBLE RED Rosa INVINCIBELLE Ruby Hydrangea Blue CHIFFON Hibiscus
Ilex glabra GEM BOX Ilex g labr a SMNIGAB 17 pp#27, 554, c br af A cool new dwarf evergreen that looks more like a boxwood than an inkberry, Gem Box Ilex is great as an evergreen hedge or a container specimen. The dainty, dark green foliage is often tinged with red during the spring flush. SIZE & SH A PE 2-3 TA L L A N D W ID E 5 EV ERG REEN D EER-RESISTA N T N A TIVE SPA CIN G 2-3 U SD A 5, A H S 9 www.provenwinners-shrubs.com FULL SUN / PART SH A D E
GEM BOX Ilex glabra SMNIGAB17 pp#27,554, cbr#5629 Common name: inkberry holly Landscape Info: Features & Benefits: USDA/AHS zones: USDA 5/AHS 9 Mature height: 2-3 /.6-.9 m Exposure: Part-full sun Irrigation: Average - Native evergreen substitute for boxwood, naturally growing as a tight, round sphere. - Does not get leggy or bare like other inkberry holly do. - Excellent as a low hedge, foundation plant, accent plant, or formal container. - Deer resistant. Cultural info: Grower Tips: ph Level: 5.6-6.2 Trim to shape as new growth allows do not cut into thick stems. The plant s natural habit is rounded, and trimming should merely Nutrient Needs: Average EC (2:1 extract): 0.6 0.9 Light Level: Moderate to high Watering: Average Rooting Out Temp: 65 72 F/18.3 22.2 C follow this. Requires acidic growing media. Potting a 2 ¼ liner directly into a 3 gallon container is not NOTES: recommended. Overwintering Temp: 40 50 F/4.4 10 C Sales Window: All season (evergreen) Blooms On: Old wood (blooms insignificant) Trimming/pruning: Trim 2-4 times Vernalization: Required Vigor Rating: Average Finish Size Liner Size Weeks of Active Growth to Finish 1 gallon 2 ¼ 4 QT 12-16 11-15 10-14 2-3 gallon 4 QT 18-22 16-20
Hydrangea arborescens INVINCIBELLE Ruby H yd rangea a r bor esce ns NCHA3 pp#28, 317, c br af Dark burgundy red flower buds open to two-toned blooms: bright ruby red and silvery pink florets. This strong rebloomer has sturdy stems and dark, attractive foliage for an outstanding flower presentation. This cold-hardy Hydrangea is a very reliable bloomer that is great for landscaping and also for cut flowers. SIZE & SH A PE 2-3 TA L L A N D W ID E 10 NATIV E H A RD Y RELIA BLE PRU N E IN LA TE WIN TER SPA CIN G 2-4 SOIL D OES N OT A FFECT FLOWER COLOR U SD A 3, A H S 9 FUL L SU N www.provenwinners-shrubs.com
INVINCIBELLE Ruby Hydrangea arborescens NCHA3 pp#28,317, cbr#5623 Landscape Info: Features & Benefits: Common name: smooth hydrangea USDA/AHS zones: USDA 3/AHS 9 Mature height: 2-3 /.7-.9 m Exposure: Part-full sun Irrigation: Moderate - A dwarf smooth hydrangea with very strong stems and vivid flowers: ruby-red below and silver-pink above. Dramatic and unique. - Reblooming, flowers through frost. - Native to North America - Excellent as a cut flower as well as a low hedge, specimen, mixed border, or foundation planting. Cultural info: Grower Tips: ph Level: 5.6-6.2 Hydrangea arborescens grows quickly so is best grown in 2 gallon Nutrient Needs: High containers or larger. However, 1 gallon plants can be produced EC (2:1 extract): 0.6 0.9 quickly for same-season sales; any that do not sell can then be Light Level: High Watering: Average Rooting Out Temp: 65 72 F/18.3 22.2 C Overwintering Temp: Polyhouse no heat (where hardy) Sales Window: All season; blooms early summer, reblooms Blooms On: New wood Trimming/pruning: Pinch or shear 2-4 times Vernalization: Required Vigor Rating: Moderate to fast Finish Size Liner Size Weeks of Active Growth to Finish 1 gallon 2 ¼ 4 QT 8-10 7-9 6-8 shifted to three or five gallon cans and turned in an additional 10-14 weeks. Potting a 2 ¼ directly to a 3 gallon is not recommended. Trim 2-4 times during growing season. When dormant, cut back by a few inches to ensure a compact flush for sale. Flower color is not affected by soil ph. Applying B-Nine and Cycocell darkens foliage and encourages a dense, appealing habit for sale; proper timing is crucial for success, so consult our info sheet for details. The Invincibelle series reblooms and can be cycle-pruned to ship NOTES: in-bloom product all season. Allow 8-10 weeks to rebloom after trimming (shorter in warm conditions, longer in cool). 2-3 gallon 4 QT 16-20 14-18
Rosa OSO EASY Double Red R o s a Me ipe por ia pp #26, 298 Floriferous and disease-resistant Doubled flowers are bright red with orange undertones. This seedling of Double Knock Out maintains a nice rounded habit and has excellent disease resistance. DIS E AS E - R E S IS T ANT REBLOOMER MA Y BE TRIMMED IN SPRIN G IF N EED ED SIZE & SH A PE 3-4 TA L L A N D W ID E 5 SPA CIN G 3-4 U SD A 5, A H S 9 FUL L SU N www.provenwinners-shrubs.com
OSO EASY Double Red Rosa Meipeporia pp#26,298 Landscape Info: Features & Benefits: Common name: rose USDA/AHS zones: USDA 4/AHS 9 Mature height: 3-4 /.9-1.2 m Exposure: Full sun Irrigation: Average - Disease resistant landscape rose is low maintenance and easy to grow. - Fully double red flowers are held above the plant body for dramatic presentation. - Glossy, high quality foliage - Blooms early summer-fall without deadheading Cultural info: Grower Tips: ph Level: 5.6-6.2 Oso Easy roses benefit from frequent light trimming, which Nutrient Needs: Average-high produces an attractive habit and encourages abundant bloom. EC (2:1 extract): 0.6 0.9 Light Level: High Watering: Average Rooting Out Temp: 65 72 F/18.3 22.2 C Overwintering Temp: Polyhouse, no heat (where hardy) Sales Window: Spring-fall Blooms On: New wood Trimming/pruning: Trim 3-5 times Vernalization: Beneficial Will come out of winter fine in an unheated polyhouse; however, overwintering above freezing will help you ship in-bloom product earlier. May be cycle-pruned for a continuous supply of in-bloom product to ship; Allow 6-8 weeks after a trim for flower buds to form. Keep well watered and fertilized. Oso Easy roses are disease resistant in the landscape, but all normal rose disease prevention methods avoid overhead watering, clean up debris, etc. are strongly recommended for the best crop. Watch for aphids and spider mites. NOTES: Vigor Rating: Average-fast Finish Size Liner Size Weeks of Active Growth to Finish 1 gallon 2 ¼ 4 QT 10-12 9-11 8-10 2-3 gallon 2 ¼ 4 QT 16-18 14-16 12-14
Hibiscus syriacus BLUE CHIFFON H i b i sc us sy r iacus No t w oodt hr ee, pp#20, 574, c br # 3 5 8 3 Strong-growing blue Rich blue flowers in late summer. Use as a dramatic summer hedge or accent plant. SIZE & SH A PE 8-12 TA L L 4-6 W ID E 15 DE E R - R ESISTA N T H EA T-TOLERA N T EX TREMELY A D A PTA BLE SPA CIN G 6-7 T OLE R AT E S C LA Y SOIL A N D BLA CK WA LN U T POLLIN A TOR FRIEN D LY U SD A 5, A H S 9 FUL L SU N www.provenwinners-shrubs.com
BLUE CHIFFON Hibiscus syriacus Notwoodthree pp#20,574, cbr#3583 Common name: rose of Sharon Landscape Info: Features & Benefits: USDA/AHS zones: USDA 5/AHS 9 Mature height: 8-12 /2.4-3.6 m Exposure: Full sun Irrigation: Low to moderate - True blue flowers are doubled, with a powderpuff of extra petals in the center - Low seed - Soft, elegant habit is easier to use in the garden or landscape than traditional roses of Sharon. - Very long blooming for an eye catching hedge, screen, mixed border, or foundation planting. Cultural info: Grower Tips: ph Level: 5.6-6.2 Hibiscus are very heavy feeders and benefit from supplemental foliar feeds. Pale green foliage indicates the need for increased Nutrient Needs: High EC (2:1 extract): 0.6 0.9 Light Level: High Watering: Average Rooting Out Temp: 65 72 F/18.3 22.2 C Overwintering Temp: Poly house, no heat (where hardy) Sales Window: Spring-fall (summer bloom) Blooms On: New wood nitrogen. Trim to shape frequently to avoid cutting into thick, woody stems, as doing so will result in a slow recovery. Allow 8-10 weeks after last trim for flower buds to form if sameseason, in-bloom sales are desired. If overwintered before sale, a dormant prune improves shape. Whiteflies and aphids are most likely pest problems, scout often. Potting a 2 ¼ liner directly to a 3 gallon is not recommended. NOTES: Trimming/pruning: Trim 2-4 times Vernalization: Required Vigor Rating: Average-high Finish Size Liner Size Weeks of Active Growth to Finish 1 gallon 2 ¼ 4 QT 12-14 11-13 10-12 2-3 gallon 4 QT 18-20 16-18