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 Unrooted: 16-18 wks Rooted: 12-14 wks

USDA HARDINESS ZONES

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

BLOOM MONTHS March to September

HEIGHT

Yes

PGRs generally not needed

Thrips

Not recommended Unrooted: 14-16 wks Rooted: 10-12 wks

24 in. (61 cm)

6-11

Yes

PGRs generally not needed

White fly, spider mites, botrytis

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

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

Unrooted: 17-19 wks Rooted: 12-14 wks

20-22 in. (51-56 cm)

4-9

March to September

Yes

PGRs generally not needed

White fly, spider mites, botrytis

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

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

Unrooted: 17-19 wks Rooted: 12-14 wks

22-24 in. (56-61 cm)

4-9

March to September

Spider mites

Not recommended 10-12 wks

12-14 wks

14-16 in. (36-41 cm)

4-9

March to September

Typically not required

Will respond to 300 ppm Configure spray at young plant level

Yes

PGRs generally not needed

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

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

Unrooted: 17-19 wks Rooted: 12-14 wks

21-24 in. (53-61 cm)

5-9

April to May

Typically not required

PGRs generally not needed

Very disease resistant. Watch for root and crown rot under poor growing conditions. Generally pest and disease free.

Not recommended Rooted: 10-12 wks Rooted: 10-12 wks

12-14 in. (30-36 cm)

5-9

March to September

One pinch, two to three weeks after transplant. One pinch, two to three weeks after transplant. One pinch, two to three weeks after transplant. One pinch, two to three weeks after transplant. Typically not required

PGRs generally not needed

Unrooted: 10-12 wks Rooted: 6 wks

Unrooted: 12-14 wks Rooted: 8-10 wks

Not recommended 2-4 in.

3-9

(5-10 cm)

Generally pest and disease free.

Unrooted: 10-12 wks Rooted: 6 wks

Unrooted: 12-14 wks Rooted: 8-10 wks

Not recommended 7-10 in.

5-9

July to August

PGRs generally not needed. B9 is effective if needed, especially under lower light conditions

(18-25 cm)

PGRs generally not needed

Generally pest and disease free.

Unrooted: 10-12 wks Rooted: 6 wks

Unrooted: 12-14 wks Rooted: 8-10 wks

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

3-6 in. (8-15 cm)

4-9

Non- flowering

PGRs generally not needed

Generally pest and disease free.

Unrooted: 10-12 wks Rooted: 6 wks

Unrooted: 12-14 wks Rooted: 8-10 wks

Not recommended 2-5 in. (5-13 cm)

5-9

July to August

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

Rooted: 4-6 wks

Rooted: 6-8 wks

10-12 wks

2-5 in. (5-13 cm)

4-8

June to July

4-6 wks

6-8 wks

Not recommended 4-6 in.

6-9

March to October

Typically not required

B-Nine/ Cycocel sprays 2,500/1,000 ppm

(10-15 cm)

10-12 in. (25-30 cm)

4-9

March to April

Unrooted: Plant by Week 32 (North), Week 37 (South) Rooted: Stick by Week 28 (North), Week 32 (South) Unrooted: 16-18 wks Rooted: 12-14 wks

Unrooted: Plant by Week 35 (North), Week 40 (South) Rooted: Stick by Week 30 (North), Week 35 (South)

Yes

PGRs generally not needed

Aphids

Unrooted: Plant by Week 40 (North), Week 45 (South) Rooted: Stick by Week 35 (North), Week 40 (South)

Yes

PGRs generally not needed

Aphids, white fly

Not recommended Unrooted: 14-16 wks Rooted: 10-12 wks

14-18 in. (36-46 cm)

4-9

April to September

Yes

PGRs generally not needed

Aphids, white fly

Unrooted: 10-14 wks Rooted: 8-10 wks

Unrooted: 14-16 wks Rooted: 10-12 wks

Unrooted: 16-18 wks Rooted: 12-14 wks

12-14 in. (30-36 cm)

4-9

May to October

16-20 in. (41-51 cm)

5-8

June to August

Unrooted: Plant by Week 32 (North), Week 37 (South) Rooted: Stick by Week 28 (North), Week 32 (South) Unrooted: 13-15 wks Rooted: 8-10 wks

Yes

PGRs generally not needed

Aphids, white fly

Not recommended Unrooted: Plant by Week 35 (North), Week 40 (South) Rooted: Stick by Week 30 (North), Week 35 (South)

Recommended PGRs generally not needed

Watch for thielaviopsis, pythium, white fly, spider mites.

Unrooted: 11-13 wks Rooted: 6-8 wks

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

8-10 in. (20-25 cm)

4-9

February to October

FINISHING GUIDE | 161

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