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Zonal Geranium Presto™ Brilliant Red

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Compact, dark leaf.
  • The most uniform, compact, dark-leafed zonal geranium series.
  • Presto produces a strong first flush of flowers – 3 to 4 blooms.
  • Naturally compact habit needs no PGRs, saving you time and money.
  • Best suited to 4 to 6-in. (10 to 15-cm) pots and 10 to 14-in. (25 to 35-cm) baskets.

Culture Guide

Culture Guide


Presto Zonal Geranium, a Real Series
Culture tips for Presto Zonal Geranium
Presto Geraniums at Seville Farms
See Presto Geranium At Spring Trials

General Information

Height: 8-10" (20-25cm)
Spread: 8-10" (20-25cm)
Exposure: Sun

Propagation Guide

Tray Sizes (cells/tray): See Comments
Rooting Hormone: Optional
Average Days with Mist: 9-12
Pinch: No
Average Propagation Time (weeks): 3-4
Comments: Stick immediately upon arrival. Geraniums are best rooted in a media in strip form to allow for maximum air flow and avoid foliage overlap. After initial rehydration, careful misting is required to optimize callus and root initiation. Mature leaves should show slight wilting at midday and regain turgor in the late afternoon under ideal mist conditions. Leaf petiole wilting indicates undermisting. Overmisting leads to Botrytis. Remove flower buds at transplanting.


Soil pH: 6.2-6.6
Light Levels (fc): 3,500-6,000
Temperature Day: 65-76°F (18-24°C)
Temperature Night: 62-67°F (17-19°C)
Fertilization (ppm N): 225-300
No. of Pinches: 0
Plant Growth Regulators (S=spray / (D=Drench: Generally not needed. Cycocel(S) 750-1,000 ppm to control growth; Florel(S) 200-300 ppm to improve branching.
Pests: Fungus gnats, thrips, aphids, mites
Diseases: Botrytis, Pythium, Xanthomonas
Comments: Presto Geraniums usually do not require PGRs to produce high-quality plants. They are naturally compact, well-branched and early to flower.

Crop Time (weeks)

4- to 5-inch (10- to 13-cm) Pots, Quarts: 1 ppp, 8-9 weeks
6-inch (15-cm) Pots, Gallons: 1-2 ppp, 9-10 weeks
10- to 12-inch (25- to 30-cm) Tubs or Baskets: 4-5 ppp, 11-13 weeks