Antirrhinum (Snapdragon) Cultural Information
Plant type:Perennial but treated as half hardy annual
Use:Bedding plant, patio containers, packs and pots
Plant Height:20 – 60 cm
Sowing:November – May. Mid January for bedding sales
15-20 ºC. Do not cover with Vermiculite
Germination in 2-3 weeks. Light needed for germination
Approximate crop timing (mid season) :-
Sowing to transplanting 4 - 5 weeks
Sowing to flowering 14 – 15 weeks
Seedling to flowering 10 – 11 weeks
Temperature 16-18 ºC day initially 15 ºC night dropping to 100C minimum night after establishment pH 5.8 - 6.5
Feeding Balanced fertiliser at 200 ppm Nitrogen as needed. Plants are sensitive to high EC concentration levels.
Growth regulation Only if necessary.
Pack/Pot size Transplant into P60’s if necessary then onto P24’s.
Pot size 9 – 10 cm or three plants to a larger pot.
Planting out spacing 15 – 20 cm
Advice A pre sowing fungicide drench would be recommended prior to sowing. Compost should be allowed to dry between watering without excessive plant wilting.
Water early in the day, plants should not be left wet overnight - distorted growth can result. Strict hygiene is important thoughout the crop. Supplementary lighting is useful for early sowings.
Common diseases Pythium - rotting roots and chlorotic plants at any stage
Rhizoctonia - basal stem rot, red/brown in colour generally at seedling stage
Botrytis - Grey mould attacks damaged plants in high humidity poor ventilated
Other diseases to look out for are Downy mildew and rust
Any chemicals referred to should be used only in accordance with the manufacturer’s instructions.
The Technical and cultural details are written for gardeners and growers, they are not cut and dried and are for information purposes only. It is not intended as a blue print for growing. A guide for you to use and adjust the data to suit your growing conditions. All information is based on UK conditions and should be used for guidance only. No guarantee is given for the resultant crop, or liability accepted for using the information used on this website in any article web page or cd rom.