Here are some additional tips from the article from last week.
Cacti have once again become a popular choice for a houseplant, are easy to look after, and require little attention. Winter is their dormant period, so they require little watering and no feeding. Other houseplants should be given little water during the next couple of months, particularly Streptocarpus and African Violets. Ensure that houseplants are receiving an adequate amount of light. Pest and diseases such as Whitefly and Aphids can be kept at bay using a diluted mixture of washing up liquid and water.
Indoor forced bulbs can be put outside in a sheltered spot to die back or planted directly into the garden, so they will flower next year. Potted Amaryllis should be kept indoors if you intend to keep them for flowering the following year. Cut back spent flower stalks to just above the nose of the bulb and continue to water and feed until the leaves die back in late summer.
Dahlias and other summer flowering bulbs are widely available in garden centers now. Dahlias are easy to grow and can be an inexpensive way to fill your garden with color throughout the summer months. When selecting tubers, ensure that they are firm and not mushy. Store them in a cool dark place until you are ready to plant them (from March/April undercover and May directly outdoors).
If you have a garden for cutting flowers, prepare your beds in readiness for the sowing season ahead. Remove any stubborn perennial weeds that are hiding under the soil, such as brambles and bindweed. Sieve stony soil, if necessary, and rake the soil to a fine tilth. Borders can also be given a boost by adding organic feeds such as chicken manure and seaweed.