Geranium Zonal With colourful blooms year after year, Geranium seeds are a very popular choice for any garden; these single flowers are loved for their elegant simplicity.
A half hardy perennial, Geranium seeds should be sown between October and March for flowers during May and October the following year onwards (some plants will flower during the first year).
Geranium should germinate within 3 to 21 days. The seedlings need to be transplanted singly into 75mm pots and grow on maintaining a minimum temperature of 15°C. The Geranium plants need to be acclimatised to outside condition before planting out at 30cm apart, in an open sunny
An exclusive blend of high quality bedding Geraniums at a very low price! Robust, free-flowering plants, with many large flower heads in shades of red, rose, pink, salmon and white. An inexpensive way of filling your borders and containers.
Patio, Greenhouse, Conservatory
Up to 38cm (15in)
Up to 30cm (11.8in)
A little experience
A little experience
Media: Use a well-drained, disease free, peat-based growing mix with pH 6.0-6.2 (no lower) and
Temperatures: Temperatures for rooting out after transplant should be 65-68°F (18-20°C)
Temperatures for growing on can be lowered to 62-65°F (16-18°C)
Light: Light levels should be 3000-5000 f.c. as a guide. HID lights can be used in low light
periods to give more total light and encourage flowering.
Irrigation: Practice a good wet/dry moisture cycle but avoid wilting. Geraniums do not like to be too
wet but can’t tolerate wilt either.
Fertilizer: Feed 1–2 times per week with 150–200 ppm N from 15-5-15, 17-5-17, or 13-2-13, it is
best to use calcium based fertilizers, extra iron can be added if needed. Keep media pH
6.0–6.8, and media EC 1.25–1.75 mmhos, any higher can cause root damage.
Growth Regulators: Quantum is a slower growing, more compact variety than Horizon so less PGR is
required. For toning, use sprays of Cycocel (350-1500 ppm) or B-Nine (800-1500) +
Cycocel (350–1000 ppm) to control growth. Bonzi sprays (2–5 ppm) can also be used
once the foliage covers the media but avoid drenching. It is best to run your own trials to
avoid overdosing, as weather and cultural regimes can affect the requirements
Pests: Aphids, Thrips
Diseases: Pythium, Botrytis, Alternaria Leafspot, Rust. Necrosis on lower leaves is likely to be
caused by media pH <6.0, upper yellow leaves – high media pH >6.8 or low iron.