The only way to reproduce an Auricula true to its parent is by taking off-sets from that parent. This can be carried out at any time whilst the plant is actively growing.
However probably the best time to take off-sets is after flowering, whilst re-potting. Tease off any rooted off-sets from the main stem (known as the carrot), as Figures 1 and 2, and pot on in 6 or 8cm pots. If there are a few off-sets from the same variety, they can also be potted up in a larger pot around the edges. Water from the bottom to avoid air pockets around the roots. Plants under 4 years old tend to flower better.
Auriculas should be grown in as small a pot as possible to keep their roots restricted. A 9cm (3½") pot is normally the maximum size used for shows.
Plastic and terracotta pots are both suitable; plastic are easier to clean and do not dry out as quickly. For these reasons novices are advised to start with plastic until they have gained experience in growing.
Composts for Auriculas must be free draining to avoid roots sitting in wet heavy compost, which can cause rot and decay. Whilst there are as many compost mixes as growers, initially you won't go far wrong with a basic mix of equal parts multi-purpose compost; John Innes No. 2 compost and horticultural grit. Use only the best ingredients, it's not worth using cheaper composts or re-using last years.
Over-watering is the easiest way to kill Auriculas.
The amount of water needed varies throughout the year, see Seasonal Care Guide, but less is best.
It can be difficult to determine how much moisture is in the compost. Try judging the weight of the pot by lifting it, after a little practice it will give you a good indication.
Feeding is another issue where less is best. Overfeeding will produce flowers out of character for show standards. It is recommended to provide a spring feed as growth re-starts, a quarter strength tomato feed or liquid seaweed applied twice during March may encourage the required flower production.
Prior to re-potting, ensure that the pots to be used have been cleaned. Some soak the pots in bleach or a weak Jeyes Fluid solution to kill any pests, then wash them in soapy water.
Re-potting provides an opportunity to remove off-sets to propagate further plants; check for pests and diseases; and replace the compost and nutrients. This is best done immediately after flowering (unless you are growing for seed); or late July/early August.
Take the plant from its pot, remove all the compost and dispose of. Using this old compost on your garden could spread disease. Inspect the carrot and roots for decay and pests (root aphis and vine weevil being the worst). Shorten the carrot back to clean flesh, this also stimulates fresh roots higher up the carrot.
Using only freshly mixed compost and clean pots, re-pot ensuring no air pockets are left around the roots. Water well and store in the shade to recover, ensuring they do not dry out. This balancing of compost moisture content is most important - not too dry but more important not too wet!
Like all plants, Auriculas are liable to attack from pests and diseases, the best way of preventing this is by constant vigilance to spot and treat the problem early. There are insecticides available, however whilst the modern systemic insecticides will help, none are guaranteed to eradicate problems.
Vine Weevil is probably the most serious of the pests, where the grub eats all the roots, killing the plant. The first indication tends to be when the plant remains limp after watering. If Vine Weevil is suspected, try searching for the beatle in the dark with a torch. A good tip from one of our most experienced growers.
Root aphis identified by a white fluffy deposit, often found around the neck of the carrot at soil level and/or around the roots when removed from the pot. Whilst common it is rarely fatal, apply a weak solution of Jeyes Fluid or Methylated Spirit directly to the fluffy deposits.
Red Spider Mite a tiny insect that can be very difficult to get rid of. They prefer hot dry conditions, with the cycle of generations increasing with the temperature. Spray the greenhouse floor with water to keep temperatures down and humidity up.
Caterpillars are often found hiding in the foliage so constant vigilance is required.
Botrytis is a fungus that affects many plant species, it is sometimes called "grey mould" and the spores can spread rapidly. Remove all dead leaves regularly and dispose of, ensure that there is adequate ventilation.
The timings stated below are a guide only and can vary from year to year depending upon the winter/spring weather. Variations must also be allowed for as to your own location in the country.
After flowering may seem strange to start the year at this point, however the care and attention needed to produce the best plants for the show bench starts here. If you do not want to produce any seed :-
Late Autumn/Early Winter