Greenhouse Growing Recommendations For Lobularia

Greenhouse Growing Recommendations For Lobularia

Lobularia ‘Raspberry Stream’

Lobularia ‘Raspberry Stream’

Lobularia could be described as a garden classic, though the newest varieties are anything but traditional. Characterized by longer bloom times, crisp colors and profuse flowering, the latest introductions provide a wonderful garden experience accented with a deliciously sweet scent as a bonus. Danziger’s popular Stream Series, led by the award-winning ‘Silver Stream,’ is a great example with its tight, ball-shaped habit and honey fragrance.

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No deadheading, and they bloom until a hard frost, thanks to the great addition of enhanced heat, humidity and drought tolerance. Fast-growing and vigorous, flowers typically appear in four to six weeks and reach 14- to 18-inches high and spread about the same.

Plants prolifically produce 2- to 3-inch clusters of small blooms with big impact in colors including Bicolor Cream and Lilac, Lavender, Pink, Purple, Silvery White, Bicolor Light Yellow and Cream and Pure White.

Today’s Lobularias offer wonderful versatility, with a self-cleaning nature that lends itself well to a variety of uses. From patio pots and container combinations to window boxes and hanging baskets, they’ll be best sellers anywhere.

Eight Guidelines For High-Grade Crops

Planting. Root plants for 21 days at temperatures of 65°F to 75°F (18°C to 24°C). For a 4-inch (10 cm) pot, use one plant per pot. Plants will be ready for sale (from rooted cutting) within four to five weeks. Use two plants per pot for a 6-inch (15 cm) pot. Plants will be ready for sale in seven to eight weeks. For 10-inch (25 cm) pots, use four plants, and expect them to be ready for sale in eight to 11 weeks. Provide a preventive broad-spectrum fungicide drench at liner planting and again at transplant.

Lobularia ‘Lavender Stream’

Lobularia ‘Lavender Stream’

Pinching And Plant Growth Regulators. Pinch Lobularia once in trays about five to 10 days before planting or about 10 days after planting and establishing. Plant growth regulators are optional and will not be necessary under high light intensities.

Light Levels. Lobularias prefer full sun to partial sun. Provide high light levels, minimum 6,000 foot candles (60,000 Lux).

Growing Temperature. Maintain daytime temperatures of 60°F to 78°F (15°C to 24°C) and nighttime temperatures of 54°F to 66°F (12°C to 18°C). Lobularia also does well at higher temperatures up to 94°F (32°C).

Fertilizer. Maintain a constant feed of a balanced fertilizer. The optimum choice is one that contains a slightly increased level of iron, average levels of micronutrients and 150 to 250 ppm nitrogen.

Water Requirements. Lobularias have average water requirements but do like to be moist. Avoid overwatering.

Media, EC And pH. Choose a disease-free potting mix with excellent drainage. Maintain electrical conductivity (EC) at 0.7 to 0.9 and a pH at 6 to 6.5.
Pest Control. Pests should not be a problem if a regular preventive program of monitoring and scouting is in place. Provide good air circulation and average humidity levels to discourage insect and disease activity.