Darwin Perennials 2025 catalog

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

PLANT GROWTH REGULATORS

PINCHING AFTER TRANSPLANT

PESTS AND FUNGAL DISEASES

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

USDA HARDINESS ZONES

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

BLOOM MONTHS March to November

HEIGHT

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

12-14 in. (30-36 cm)

5-9

No

B-Nine/Cycocel combination at 3,750-5,000 ppm, B-Nine/Cycocel 500 ppm before flowering. Sumagic spray can be used after flowering if needed.

Recommended PGRs generally not needed

Powdery mildew, aphids

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

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

18 in. (46 cm)

5-9

May to July

Typically not required

PGRs generally not needed

Aphids on the buds Rooted: 6 wks

9-11 wks

Not recommended 4-6 in.

5-9

March to October

(10-15 cm)

None

PGRs generally not needed

Watch for typical pests, such as thrips, white fly, spider mites and aphids.

Not recommended Winter: 12-16 wks; Summer: 10-12 wks

Winter: 12-16 wks; Summer: 10-12 wks

24-28 in. (61-71 cm)

5-8

April to July

Not recommended 6-8 in.

4-9

March to October

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)

(15-20 cm)

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

4-9

March to October

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)

Not recommended 8-10 in.

4-9

March to October

No

PGRs generally not needed

Thrips, carnation mottle virus

(20-25 cm)

Not recommended 5-6 in.

4-9

March to October

No

PGRs generally not needed

Thrips, carnation mottle virus

(13-15 cm)

Recommended for more flowers per

PGRs generally not needed

Aphids, white fly, spider mites

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

18-24 in. (46-61 cm)

5-9

April to September;

Natural season flowering

plant. Not required.

22-24 in. (56-61 cm)

4-9

June to August

14-16 wks Spring plant; 11-13 wks Summer plant for Fall

None noted

14-16 wks Spring plant; 11-13

No

B9/Cycocel combination at 3750-5000 ppm B9/500 ppm Cycocel before flowering. Sumagic spray can be used after flowering if needed. Do not use configure in finished containers

wks Summer plant for Fall

Only to remove premature flower buds. Only to remove premature flower buds.

PGRs generally not needed

Not particularly sensitive. Use well-drained media. Not particularly sensitive. Use well-drained media.

Not recommended 10-12 wks

Not recommended 14-16 in. (36-41 cm)

4-9

June to August

Not recommended 10-12 wks

Liner: 16-18 wks

18-20 in. (46-51 cm)

4-9

June to August

Not recommended. 300 ppm Configure 2 weeks after transplant when greenhouse grown will reduce overall plant height.

Yes, a second pinch is often beneficial.

Sumagic 5-10 ppm spray

Watch for bacterial infections.

6-8 wks

10-12 wks

12-14 wks

18-24 in. (46-61 cm)

6-8

March to September

Recommended Concise/Sumagic 30-60 ppm spray

None noted

Not recommended Rooted: 20 wks

Rooted: 20 wks

36-48 in. (91-122 cm)

3-9

July to September

24-32 in. (61-81 cm)

4-9

July to October

Unrooted: 15-17 wks Rooted: 10-12 wks Natural flowering early July

One pinch, two to three weeks after transplant.

PGRs generally not needed

Aphids, white fly, spider mites

Not recommended Unrooted: 15-17 wks Rooted: 10-12 wks Natural flowering in early July

12-18 in. (30-46 cm)

6-9

April to September

Unrooted: 14-16 wks, 3-5 ppp Rooted: 11-13 wks, 3-5 ppp

Recommended PGRs generally not needed

Pythium, rhizoctonia, botrytis

Unrooted: 10-13 wks Rooted: 7-10 wks

Unrooted: 12-15 wks, 2-3 ppp Rooted: 9-12 wks, 2-3 ppp

Recommended PGRs generally not needed

Spider mites, aphids Unrooted: 12-14 wks Rooted: 8-10 wks

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

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

16-18 in. (41-46 cm)

6-9

April to September

Recommended PGRs generally not needed

Spider mites, aphids Unrooted: 12-14 wks Rooted: 8-10 wks

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

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

14-16 in. (36-41 cm)

6-9

April to September

FINISHING GUIDE | 155

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