Azaleas are the blaze of colour that brings warmth to the cooler months garden. These divine mass flowering plants will do well for many years but they do need a little TLC to look their best.
These beautiful plants have dark lush green foliage and come in a wide variety of colours from white, through to pinks, purples, reds and oranges. There are two basic flower types – single and double. The double is my favourite and luckily many double flowering azaleas spot flower throughout the year so I can enjoy this lovely plant all the time!
Most Azaleas will thrive in semi-shade but some will also look fantastic in full sun or full shade. I prefer the smaller more compact varieties that usually grow to around 50cm to 1m high but some can get over 2m high.
Azaleas love acid soil; the pH range should be between 5.5 and 6.0. Many Ipswich residents find that their garden’s soil pH is too low and prefer to grow azaleas in pots and that's perfectly ok as these plants do well in pots and gardens.
Azaleas have a shallow tight root system. If a good layer of mulch is applied, to your pots or the garden bed, and a soil wetter is used at least every 12 months azaleas should thrive. The mulch, must be organic mulch, like sugar cane or rainforest fines. This helps to keep moisture in the soil, and also helps keep the roots warm in winter and cool in summer. The soil wetter helps water penetrate the soil and root ball as after a period of time your soil can become hydrophobic (resists water).
To keep my azaleas looking their best I use the Plant of Heath Range. I use Organic Link every three months and I will also try to give them a liquid fertiliser fortnightly. I alternate between Triple Boost and Neem Oil (together) and Silica and Potash. When my azaleas have finished flowering I prune them back by about one third.
Azaleas do have some pest and disease problems but I find the healthier the plant the less trouble I have.
Petal blight is a fungal disease that turns the beautiful flowers suddenly brown. You can use an organic fungicide called eco-fungicide but I find the easiest solution is to pick off the affected flowers and throw them away and then I give them some liquid fertiliser.
A common problem with azaleas is one where the leaves loose their colour and lustre; it kind of looks like the leaf has been sand blasted. If this occurs, turn the leaves over and you may see black spots. This is a sign of Lace bug. Severe infestations can lead to reduced plant vigour and loss of leaves. To prevent this from happening I mix Neem oil into my Triple Boost Liquid fertiliser (that I foliar spray once a fortnight). I find prevention is better than fighting the problem after it occurs.
If the problem does occur I spray with Eco-Fend. You may need to spray a few times to control your infestation and unfortunately once the leaves have that sand blasted look they will stay that way. A good trim and fertilise will help promote nice new healthy growth to cover the unsightly affected growth.
I love how azaleas can enliven a garden‘s dull spots and bring a smile to the face of a friend when given as a present. These plants truly will give your life the TLC it deserves.