2026-2028 Grower Success Guide

PERENNIALS | VEGETATIVE FINISHING

Achillea millefolium Yarrow DESERT EVE ™

FERTILIZER RATE (PPM N)

PINCH

FINISHING PROGRAM

PESTS

DISEASES

FINISH PGRS

125–175 ppm N No

1 qt. to 2.5 qt. | 1 ppp | 8–10 weeks 3 qt. to 2 gal. | 3 ppp | 8–10 weeks

Aphids, Spider Mites, Whiteflies, Thrips

Botrytis, Powdery mildew B-Nine ® WSG sprays at 2,500 ppm, or Bonzi ® sprays at 10–20 ppm can be used. To hold finished plants a Bonzi ® drench at 0.5–1 ppm in the North and 2–3 ppm in the South can be used.

Arenaria montana Sandwort SUMMER / WINTER

FERTILIZER RATE (PPM N)

PINCH

FINISHING PROGRAM

PESTS

DISEASES

FINISH PGRS

75–125 ppm N

Yes if not pinched in prop

1 qt. | 1 ppp | 5-6 weeks 1 gal. | 1–2 ppp | 6–7 weeks

Aphids

Botrytis, Powdery mildew Bonzi ® spray at 10–20 ppm can be used if needed to tone

Aubrieta hybrida Aubrieta AXCENT ™ / GLACIER ™

FERTILIZER RATE (PPM N)

PINCH

FINISHING PROGRAM

PESTS

DISEASES

FINISH PGRS

75–125 ppm N

No

1 qt. | 5–6 weeks | 1 ppp 1 gal. | 6–7 weeks | 1 ppp

Aphids

Botrytis, Pythium, Rhizoctonia

Spray of B-Nine ® WSG at 2,500 ppm can be used to control height

Campanula interspecific Bellflower CARIBOO ™

FERTILIZER RATE (PPM N)

PINCH

FINISHING PROGRAM

PESTS

DISEASES

FINISH PGRS

125–175 ppm N Yes

1 qt. to 2.5 qt. | 1 ppp | 14–16 weeks 3 qt. to 2 gal. | 3 ppp | 16–18 weeks

Aphids, Spider Mites, Whiteflies, Thrips

Powdery Mildew

B-Nine ® WSG spray at 2,500 ppm, or a Bonzi ® spray at 30 ppm can be used.

Coreopsis grandiflora Tickseed CASTELLO ™

FERTILIZER RATE (PPM N)

PINCH

FINISHING PROGRAM

PESTS

DISEASES

FINISH PGRS

125–175 ppm N Yes, 7–10 days after transplant

1.25 qt. to 2.5 qt. | 1 ppp | 7–8 weeks 3 qt. to 2 gal. | 1–2 ppp | 8–10 weeks

Aphids, Thrips, Whiteflies, Scale

Downy Mildew, Powdery Mildew, Bacterial Soft Rot (Pseudomonas cichorii)

B-Nine ® WSG spray at 2,500 ppm, or Bonzi ® spray at 20 ppm can be used. A Bonzi ® drench of 2–3 ppm can be used to hold product. For southern regions, a spray of Sumagic ® from 2–4 ppm can be beneficial.

Erysimum linifolium Wallflower ERYSISTIBLE ™ / SUPER BOWL ™

FERTILIZER RATE (PPM N)

PINCH

FINISHING PROGRAM

PESTS

DISEASES

FINISH PGRS

125–175 ppm N Yes, if not pinched in prop

1 qt. | 1 ppp | 5–6 weeks 1.25 to 2.5 qt. | 1 ppp | 6–7 weeks

Aphids, Whiteflies

Downy mildew, Powdery mildew

If needed, spray applications of Bonzi® at 30 ppm or Sumagic® at 5 ppm are effective.

Gaillardia aristata Blanket Flower BARBICAN ™ / SUNRITA ™

FERTILIZER RATE (PPM N)

PINCH

FINISHING PROGRAM

PESTS

DISEASES

FINISH PGRS

125–175 ppm N No

1 qt. | 1 ppp | 9–10 weeks 1 gal. | 1–2 ppp | 9–10 weeks 2 gal. | 3 ppp | 9–10 weeks

Spray B-Nine ® WSG at 2,500–5,000 ppm or Bonzi ® at 10–15 ppm

Aphids, Spider Mites, Thrips

Botrytis, Pythium

Helenium autumnale Sneezeweed HAYDAY ™

FERTILIZER RATE (PPM N)

PINCH

FINISHING PROGRAM

PESTS

DISEASES

FINISH PGRS

200–250 ppm N Yes, 7–10 days after transplant

1.25 qt. to 2.5 qt. | 1 ppp | 10–12 weeks 3 qt. to 2 gal. | 2–3 ppp | 10–12 weeks

Aphids, Leafhoppers, Leafminers, Spider Mites

Powdery Mildew

If crop timing is correct, then PGRs are typically not necessary. If needed B-Nine ® WSG spray at 2,500 ppm should be sufficient.

GROWER SUCCESS GUIDE 2026–2028

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