Darwin Perennials 2027 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: 14-16 wks Rooted: 12-14 wks

USDA HARDINESS ZONES

1-GAL. (15-CM) POT, 1 PLANT PER POT Unrooted: 14-16 wks Rooted: 10-12 wks

BLOOM MONTHS

HEIGHT

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

10-12 in. (25-30 cm)

4-9

June to July

Recommended PGRs generally not needed

Powdery mildew may be present if grown under poor air circulation and high humidity. White fly, spider mites. Powdery mildew when pressure is high.

Typically not required

PGRs generally not needed

Not recommended 9-11 wks

10-12 wks

15-18 in. (38-46 cm)

4-9

June to July

Aphids, white fly, spider mites

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

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

28-36 in. (71-91 cm)

4-9

March to September

Use daminozide/ chlormequat chloride 2,500/800 ppm to control height

Not necessary when pinched in liner.

Recommended PGRs generally not needed

White fly

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

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

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

18 in. (46 cm)

4-8

May to September

Spider mites, thrips Not recommended 9-11 wks

10-12 wks

24-28 in. (61-71 cm)

3-9

April to September

Typically not required

Daminozide/ chlormequat chloride sprays 2,500/1,000 ppm PGRs generally not needed

Typically not required

Watch for crown rot if overwatered.

6-8 wks

10-12 wks

12-14 wks

3-6 in. (8-15 cm)

5-9

March to October

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

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

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

12 in. (30 cm)

5-8

April to September

Yes

PGRs generally not needed

Spider mites, thrips. Watch for INSV/TSWV.

Yes

PGRs generally not needed

White fly, spider mites Not recommended Rooted: 10-12 wks Rooted: 12-14 wks

18-20 in. (46-51 cm)

5-9

May to August

Yes

PGRs generally not needed

White fly, spider mites Not recommended Rooted: 10-12 wks Rooted: 12-14 wks

20-24 in. (51-61 cm)

5-9

June to August

Uniconazole-P sprays beneficial

Spider mites, thrips Not recommended Unrooted: 19-22 wks Rooted: 12-14 wks

Unrooted: 21-23 wks Rooted: 14-16 wks

20-24 in. (51-61 cm)

6-9

July to August

Second trim after liner pinch is beneficial

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

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

30-34 in. (76-86 cm)

5-8

May to July

Yes

PGRs generally not needed

Spider mites, thrips. Watch for INSV/TSWV.

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

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

28-30 in. (71-76 cm)

3-9

July to September

Recommended PGRs generally not needed

Pythium can be a problem if overwatered. White fly, spider mites. Powdery mildew when pressure is high.

Rooted: 7-9 wks

Rooted: 10-12 wks Rooted: 12-14 wks

14-16 in. (36-41 cm)

4-8

April to May

Benzyladenine at 600 ppm to increase branching Benzyladenine at 600 ppm to increase branching Benzyladenine at 600 ppm to increase branching Benzyladenine at 600 ppm to increase branching

Powdery mildew when pressure is high.

Rooted: 7-9 wks

Rooted: 10-12 wks Rooted: 12-14 wks

6-8 in. (15-20 cm)

4-8

April to May

Yes, in cases where there are two or less shoots. Yes, in cases where there are two or less shoots. Yes, in cases where there are two or less shoots.

Powdery mildew when pressure is high.

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

16-18 in. (41-46 cm)

4-9

June to August

Powdery mildew when pressure is high.

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

18-20 in. (46-51 cm)

4-9

June to August

6-8 wks

10-12 wks

12-14 wks

6-8 in. (15-20 cm)

5-9

April to June

None

PGRs generally not needed

Pythium and rhizoctonia can result from overwatering.

Aphids, leaf miners, leaf spot

Not recommended 12-14 wks

12-14 wks

30-34 in. (76-86 cm)

5-8

Late June to September

No

Daminozide/ chlormequat chloride combination at 3,750 ppm/500 ppm can be used to tone foliage. May delay flowering. Uniconazole-P sprays after flower initiation if needed.

Yes

PGRs generally not needed

White fly, thrips

Rooted: 6-8 wks

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

12-14 in. (30-36 cm)

7-9

March to September

PGRs generally not needed

White fly, spider mites Unrooted: 12-14 wks Rooted: 8-10 wks

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

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

16-18 in. (41-46 cm)

7-10

March to September

Once for smaller pot sizes, twice for larger containers.

FINISHING GUIDE | 159

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