- Thujas are popular conifers for hedges that require proper care to stay green all year round.
- Thuja diseases, such as phytophthora or gray mold, manifest themselves as browning of the shoots and may lead to the death of the plants.
- Discover homemade baker’s yeast fertilizer that will make your thujas grow lush and healthy.
- Learn how to properly care for thujas in summer to prevent browning and enjoy a thick, green hedge.
Thujas are beautiful conifers that in Poland are most often planted as hedges. If properly cared for, they are green all year round and effectively protect against prying eyes from neighbors. Thujas do not require excessive care and grow well in a moderate climate. The key to thick and green thujas is care focusing on three areas. This means regular watering (also in winter, as they are exposed to physiological drought), pruning and fertilizing.
Thujas can get sick. This is most often manifested by yellowed or browned shoots. The most common thuja diseases are:
- Phytophthora (root and trunk base rot) – a fungus-like organism of the Phytophthora genus. It attacks the roots and base of the trunk. Gradual browning and dying of shoots, usually starting from the bottom of the plant or from individual branches. The needles become dull, gray and then brown. The plant withers even though the ground is moist. When you dig it up, you can see the rotten, brown roots, and the tissues under the bark at the base of the trunk are brown, watery, and smelly.
- Gray mold (Botrytis cinerea) Appearance of watery spots on shoots and needles, which quickly turn brown and become covered with a gray, fluffy coating (mycelium). It often attacks young shoots and weakened plants.
- Shoot dieback (Kabatinia juniperii, Phomopsis juniperovora) – Browning and dying of the shoot tips, often from the outside of the bush. Small, black dots (fungal spores) may appear on infected needles. The shoots look dry.
- Ring spot of shoots (Didymascella thujina) – Small, round or oval spots appear on scales and young shoots, initially light green, then yellow, and then brown. In the center of the spots, a black, fruiting body of the mushroom is formed, surrounded by a lighter border. Infected shoots die.
1 cup of this is enough to fertilize your thuja. They will grow like weeds, literally
One of the most frequently recommended ingredients is baker’s yeast. They stimulate growth processes and protect against diseases and pest attacks. Additionally, yeast limits the development of undesirable microorganisms that adversely affect the appearance and health of plants. Additionally, they contain many valuable nutrients, such as potassium, phosphorus, iron, selenium, magnesium, calcium and amino acids. Baker’s yeast is great for fertilizing thuja. The fastest and easiest way is to prepare a nutrient from unfermented yeast. All you need to do is pour 10 liters of warm water over 1 cube of yeast. Set aside for a few hours and it’s ready. After this time, the fertilizer based on baker’s yeast is ready for use. Water the thuja with it once every few weeks. The conifers will quickly turn green and thicken.
How to care for thujas in summer so that they do not turn brown?
so they should be watered regularly, especially during heat and drought. Older, well-rooted specimens are more resistant, but will also appreciate an additional dose of water on hot days. Water thoroughly at the base of the plant, avoiding soaking the needles in full sun, which could cause them to burn. In addition to watering, it is also worth mulching around the thuja. A layer of pine bark or wood chips will help retain moisture in the soil, reduce weed growth and protect the roots from overheating. In summer, you can also gently prune thujas to maintain the desired shape and encourage them to thicken. However, remember not to cut too radically on hot days, as it may weaken the plant. Regular observation of thuja will allow you to quickly detect possible pests or diseases and take appropriate protective measures
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