How to Grow Blueberries in Pots: Even Beginners Can Master It Easily

Blueberry is also known as blue plum, bog bilberry, bog whortleberry, etc. It is a low shrub of the genus Vaccinium in the heath family (Ericaceae). In increasingly compact cities where land is worth its weight in gold, blueberries are mainly grown in pots, and almost all blueberries are suitable for pot cultivation. However, when growing them on a balcony, you should pay attention to choosing a variety of suitable height so that the pot is easy to move. Now let us take a look at how to grow blueberries in pots!

Pot Soil Preparation

Blueberries can only grow healthily in acidic media. A planting soil pH between 4.5 and 5.5 is most suitable for blueberry growth. Garden soil generally has a pH between 6 and 7, and even the acidic soil sold at flower and bird markets has a pH of at least 5.5 to 6. Planting bases generally use sulfur powder to acidify the soil: adding one gram of sulfur powder per liter of soil can lower the soil pH by 1. A few varieties have low demands for acidity, but none of them grow as well as they do in acidic soil.

Rational Fertilization

Blueberries dislike heavy fertilizer and calcium. During planting, it is generally enough to add rotted cow, sheep or rabbit manure, or use leaf mold, at the early stage of planting. They dislike heavy fertilizer, but that does not mean they cannot be given additional fertilizer, so a small amount of additional fertilization is still necessary in later cultivation. Never apply heavy fertilizer. Generally, a nitrogen-phosphorus-potassium compound fertilizer with a 1:1:1 ratio or a 1:2000 solution of ammonium sulfate is used. Also be careful to keep away from anything containing calcium, such as eggshells that some people often put in flower pots.

Timely Watering

Blueberry roots are shallow and prefer moist conditions, so timely watering is very necessary. When watering blueberries, pay attention to the water source and water quality. Deep well water generally has a high pH and high sodium and calcium content, and long-term use will affect blueberry growth. When irrigating, you can use sulfuric acid to adjust the pH to around 4.5 to 5.5 before watering, but you should water with acid water once after about every 3 rounds of irrigation. Proper watering can help blueberries resist high temperatures and get through the summer safely.

Light Control

Blueberries need light just as much as other plants do; it is indispensable. Comparatively speaking, for the same variety, if light intensity is insufficient, fewer flower buds will form and fruit quality will decline. For orchards with excessively high planting density, proper pruning helps photosynthesis proceed. For balcony and terrace growers, light management for blueberries is simpler than in orchards, but ventilation should be noted.

Cold Protection Management

Lowbush and half-highbush blueberries have relatively strong cold resistance, but due to different low temperatures in various regions, freezing damage still occurs when extreme weather appears. The main problems are freezing damage to the tips of branches and flower buds of plants overwintering in the open, and even the death of whole plants from freezing. Therefore, in cold regions, blueberry cultivation and overwintering protection are also important measures for increasing yield.