Darwin 2027 Catalog - Star Roses

Product information and culture charts at darwinperennials.com

CROP SCHEDULE & USES 1-QT. (10-CM) POT, 1 PLANT PER POT

PESTS AND FUNGAL DISEASES

PLANT GROWTH REGULATORS

PINCHING AFTER TRANSPLANT Typically not required

2 TO 3-GAL. (25 TO 30-CM) POT, 3 PLANTS PER POT

USDA HARDINESS ZONES

BLOOM MONTHS April to September

1-GAL. (15-CM) POT, 1 PLANT PER POT

HEIGHT

PGRs generally not needed

Aphids on the buds Rooted: 6 wks

Rooted: 6-8 wks

Not recommended 10-12 in. (25-30 cm)

4-9

Unrooted: 13-15 wks Rooted: 8-10 wks

Unrooted: 15-17 wks Rooted: 10-12 wks

Unrooted: 19-22 wks Rooted: 12-14 wks

26-28 in. (66-71 cm)

Typically not required

PGRs generally not needed

Pythium and rhizoctonia can result from overwatering.

April to September

4-9

Recommended PGRs generally not needed

Thrips, white fly

Not recommended Unrooted: 15-17 wks Rooted: 10-12 wks

Unrooted: 19-22 wks Rooted: 12-14 wks

16-22 in. (41-56 cm)

April to September

7-10

Recommended PGRs generally not needed

Thrips, white fly

Not recommended Unrooted: 15-17 wks Rooted: 10-12 wks

Unrooted: 19-22 wks Rooted: 12-14 wks

15-18 in. (38-46 cm)

April to September

5-9

6-8 in. (15-20 cm)

Unrooted: stick week 22-26 Rooted: plant week 27-31 Liner: 16-18 wks

Unrooted: stick week 26-32 Rooted: plant week 31-36 Liner: 14-16 wks

Recommended PGRs generally not needed None noted

Unrooted: stick week 30-35 Rooted: plant week 35-40 Liner: 10-12 wks

April to May

4-9

No

PGRs generally not needed

Watch for crown rot if overwatered.

10-12 in. (25-30 cm)

March to October

5-9

Not recommended Rooted: 6-8 wks

10-12 wks

16-18 in. (41-46 cm)

Typically not required

Daminozide/ chlormequat chloride

Not particularly sensitive. Use well-drained media. Pythium and rhizoctonia can result from overwatering. Pythium and rhizoctonia can result from overwatering. Pythium and rhizoctonia can result from overwatering. Pythium and rhizoctonia can result from overwatering. Pythium and rhizoctonia can result from overwatering.

Non- flowering

4-9

Not recommended 10-12 wks

12-14 wks

14-16 in. (36-41 cm)

None

PGRs generally not needed

April to May

4-9

Not recommended 10-12 wks

12-14 wks

12-15 in. (30-38 cm)

None

PGRs generally not needed

April to May

4-9

Not recommended 10-12 wks

12-14 wks

6-9 in. (15-23 cm)

None

PGRs generally not needed

April to May

4-9

Not recommended 10-12 wks

12-14 wks

10-12 in. (25-30 cm)

None

PGRs generally not needed

April to May

4-9

Not recommended 10-12 wks

12-14 wks

12-15 in. (30-38 cm)

None

PGRs generally not needed

April to May

4-9

PGRs generally not needed

Thrips, spider mites Not recommended Rooted: 12-14 wks Rooted: 14 wks

28-36 in. (71-91 cm)

One pinch, two to three weeks after transplant One pinch, two to three weeks after transplant.

August to October

6-9

PGRs generally not needed

Thrips, spider mites Not recommended Rooted: 12-14 wks Rooted: 14 wks

28-36 in. (71-91 cm)

August to October

6-9

No

PGRs generally not needed

Spider mites

Not recommended Rooted: 12-14 wks Rooted: 14 wks

48 in. (122 cm)

August to October

6-9

No

Daminozide/chlormequat chloride combination at 3,750-5,000 ppm, daminozide/ chlormequat chloride 500 ppm before flowering. Uniconazole-P spray can be used after flowering if needed. Daminozide/chlormequat chloride combination at 3,750-5,000 ppm, daminozide/ chlormequat chloride 500 ppm before flowering. Uniconazole-P spray can be used after flowering if needed. PGRs generally not needed

Spider mites, thrips Not recommended Rooted: 10-12 wks Rooted: 12-14 wks

12-14 in. (30-36 cm)

March to November

5-9

No

Spider mites, thrips Not recommended Rooted: 10-12 wks Rooted: 12-14 wks

12-14 in. (30-36 cm)

March to November

5-9

Typically not required

Aphids on the buds Rooted: 6 wks

9-11 wks

Not recommended 4-6 in.

March to October

5-9

(10-15 cm)

Not recommended 6-8 in.

18-20 wks, including 6 wks below 50°F (10°C)

No

PGRs generally not needed

Thrips, carnation mottle virus

18-20 wks, including 6 wks below 50°F (10°C)

March to October

4-9

(15-20 cm)

Not recommended 10-12 in. (25-30 cm)

18-20 wks, including 6 wks below 50°F (10°C) 18-20 wks, including 6 wks below 50°F (10°C) 18-20 wks, including 6 wks below 50°F (10°C)

No

PGRs generally not needed

Thrips, carnation mottle virus

18-20 wks, including 6 wks below 50°F (10°C) 18-20 wks, including 6 wks below 50°F (10°C) 18-20 wks, including 6 wks below 50°F (10°C)

March to October

4-9

Not recommended 8-10 in.

No

PGRs generally not needed

Thrips, carnation mottle virus

March to October

4-9

(20-25 cm)

Not recommended 5-6 in.

No

PGRs generally not needed

Thrips, carnation mottle virus

March to October

4-9

(13-15 cm)

PGRs generally not needed

Aphids, white fly, spider mites

Not recommended Rooted: 12-14 wks Rooted: 14 wks

18-24 in. (46-61 cm)

Recommended for more flowers per plant. Not required.

April to September;

5-9

Natural season flowering

89

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