VEGETATIVE PROPAGATION
Bidens MEXICAN GOLD ™ Bidens ferulifolia REC TRAY PRODUCT FORM ROOTING HORMONE MIST TIME
PINCH
PROP TIME BOTTOM HEAT
105-cell (30 mm) or larger
URC, AutoStix ®
Not recommended
CapSil ® (spray adjuvant) can be sprayed on the cuttings at a rate of 2–4 oz/100 gal within 1–2 days after sticking to help rehydrate the cuttings. Misting should be significantly reduced after 2–3 days and after cuttings become fully hydrated.
Recommended 3.5–4 weeks 70–74 °F (21–23 °C)
Comments: Mexican Gold and Mexican Gold Jumbo Bidens have moderate vigor and will generally need a PGR treatment in propagation. To control growth after rooting, a spray of B-Nine ® WSG (1,500–2,500 ppm) is sufficient. It is also becoming popular for growers to combine Florel ® (350 ppm) with the B-Nine ® WSG (1,500 ppm) to increase growth control and to improve branching. These Florel ® + B-Nine ® WSG combo sprays should be applied to actively growing plants. Do not spray B-Nine ® WSG or Florel ® + B-Nine ® WSG tank mixes on stressed or weak cuttings. For all sprays listed above, the mist should be off for a minimum of one hour for the plant growth regulator (PGR) to absorb into the leaf tissue. Mexican Gold Compact Bidens has very low vigor and generally needs little PGR treatment in propagation.
Calibrachoa CABRIO ™ Calibrachoa hybrida REC TRAY PRODUCT FORM ROOTING HORMONE MIST TIME
PINCH
PROP TIME BOTTOM HEAT
105-cell (30 mm) or larger
URC, AutoStix ®
Recommended
CapSil ® (spray adjuvant) can be sprayed on the cuttings at a rate of 2–4 oz/100 gal within 1–2 days after sticking to help rehydrate the cuttings. Misting should be significantly reduced after 2–3 days and after cuttings become fully hydrated.
Recommended 4.5–5 weeks 72–74 °F (22–23 °C)
Comments: Cabrio Calibrachoas are compact-medium growers and should not need the typical growth regular in propagation that other more vigorous varieties require. To keep plants under control, a spray of B-Nine ® WSG at 1,500–2,500 ppm can be applied after cuttings are well-rooted and vegetative growth begins. It is also becoming popular for growers to combine Florel ® at 350–500 ppm with the B-Nine ® WSG solution listed above to increase growth control and to improve branching. These Florel ® + B-Nine ® WSG combo sprays should be applied to actively growing plants and done ideally before pinching. Do not spray B-Nine ® WSG or Florel ® + B-Nine ® WSG tank mixes on stressed or weak cuttings. For all sprays listed above, the mist should be off for a minimum of one hour for the plant growth regulator (PGR) to absorb into the leaf tissue.
Calibrachoa CALLIE ® Calibrachoa hybrida REC TRAY PRODUCT FORM ROOTING HORMONE MIST TIME
PINCH
PROP TIME BOTTOM HEAT
105-cell (30 mm) or larger
URC, AutoStix ®
Recommended
CapSil ® (spray adjuvant) can be sprayed on the cuttings at a rate of 2–4 oz/100 gal within 1–2 days after sticking to help rehydrate the cuttings. Misting should be significantly reduced after 2–3 days and after cuttings become fully hydrated.
Recommended 4.5–5 weeks 72–74 °F (22–23 °C)
Comments: Callie Calibrachoas have a range of vigor, with some being relatively compact to others having more of a medium to medium-vigorous habit. To keep plants under control, a spray of B-Nine ® WSG at 1,500– 2,500 ppm can be applied after cuttings are well-rooted and vegetative growth begins. It is also becoming popular for growers to combine Florel ® at 350–500 ppm with the B-Nine ® WSG solution listed above to increase growth control and to improve branching. These Florel ® + B-Nine ® WSG combo sprays should be applied to actively growing plants and done ideally before pinching. Do not spray B-Nine ® WSG or Florel ® + B-Nine ® WSG tank mixes on stressed or weak cuttings. For all sprays listed above, the mist should be off for a minimum of one hour for the plant growth regulator (PGR) to be absorbed into the leaf tissue.
Calocephalus WHIMSY ™ Calocephalus brownii REC TRAY PRODUCT FORM ROOTING HORMONE MIST TIME
PINCH
PROP TIME BOTTOM HEAT
105-cell (30 mm) or larger
URC, AutoStix ®
Not Recommended
CapSil ® (spray adjuvant) can be sprayed on the cuttings at a rate of 2–4 oz/100 gal within 1–2 days after sticking to help rehydrate the cuttings. Misting should be significantly reduced after 2–3 days and after cuttings become fully hydrated.
Not recommended
4.5–5 weeks 70–74 °F (21–23 °C)
Comments: Whimsy Calocephalus is a compact, dense-growing plant. It should not require any chemical growth regulation.
Curry Plant HELICHRYSUM ITALICUM Helichrysum italicum REC TRAY PRODUCT FORM ROOTING HORMONE MIST TIME
PINCH
PROP TIME BOTTOM HEAT
105-cell (30 mm) or larger
URC, AutoStix ®
Not recommended
CapSil ® (spray adjuvant) can be sprayed on the cuttings at a rate of 2–4 oz/100 gal within 1–2 days after sticking to help rehydrate the cuttings. Misting should be significantly reduced after 2–3 days and after cuttings become fully hydrated.
Not recommended
3.5–4 weeks 70–74 °F (21–23 °C)
Comments: Helichrysum italicum is a bushy, dense-growing plant. It typically does not require any chemical growth regulation in propagation. Transplant on time to avoid stretched growth. Use plastic tenting or Reemay ® fabric during propagation if needed to keep high humidity and to minimize excess water on the foliage.
Dahlia CAFÉ AU LAIT Dahlia hybrida REC TRAY PRODUCT FORM ROOTING HORMONE MIST TIME
PINCH
PROP TIME BOTTOM HEAT
105-cell (30 mm) or larger
URC
Recommended
CapSil ® (spray adjuvant) can be sprayed on the cuttings at a rate of 2–4 oz/100 gal within 1–2 days after sticking to help rehydrate the cuttings. Misting should be significantly reduced after 2–3 days and after cuttings become fully hydrated.
Not recommended
3.5–4 weeks 70–74 °F (21–23 °C)
Comments: Café Au Lait Dahlia has a moderately vigorous habit and may require a plant growth regulator (PGR) treatment in propagation. If needed to control growth after rooting, sprays of B-Nine ® WSG (1,500 ppm) are usually sufficient. A tank-mix spray of Florel ® (350–500 ppm) + B-Nine ® WSG (1,500 ppm) can also be used to control growth and improve branching. Do not spray Florel ® on stressed or weak cuttings. For all sprays listed above, the mist should be off for a minimum of one hour for the PGR to absorb into the leaf tissue.
Dahlia DAHLEGRIA ® Dahlia hybrida REC TRAY PRODUCT FORM ROOTING HORMONE MIST TIME
PINCH
PROP TIME BOTTOM HEAT
105-cell (30 mm) or larger
URC, AutoStix ®
Not Recommended
CapSil ® (spray adjuvant) can be sprayed on the cuttings at a rate of 2–4 oz/100 gal within 1–2 days after sticking to help rehydrate the cuttings. Misting should be significantly reduced after 2–3 days and after cuttings become fully hydrated.
Not recommended
3.5–4 weeks 72–74 °F (22–23 °C)
Comments: Dahlegria Dahlia has a vigorous habit, and it will need a plant growth regulator (PGR) treatment in propagation. To control growth after rooting, sprays of B-Nine ® WSG (2,500–3,500 ppm) are usually sufficient. A tank-mix spray of Florel ® (350–500 ppm) + B-Nine ® WSG (2,500 ppm) can also be used to control growth and improve branching. Do not spray Florel ® on stressed or weak cuttings. For all sprays listed above, the mist should be off for a minimum of one hour for the PGR to absorb into the leaf tissue.
G R O W E R S U C C E S S G U I D E 2 0 2 2 – 2 0 2 3 | A N N U A L S
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