Fertilize olive tree - this is how you promote growth

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Olive tree - Olea europaea

A life in the tub or planted in the garden is a special challenge for the olive tree far from home, which is cushioned with a knowledgeable care program. A key function is the supply of nutrients. Balanced it should be, done at the right time and take into account the exotic demands. Its Mediterranean origin does not mean that you are only dependent on special mineral fertilizers. There are quite organic alternatives available. Explore all options here to fertilize your olive tree professionally.

At what season is fertilized?

Whether you're cultivating your olive tree in a bucket or a bed, this is the right time to ask. An informed answer requires a quick look at the botany of the olive tree. An Olea europaea thrives as an evergreen plant, so that the decorative crown retains its leaves throughout the year. Depending on location and variety, between the end of April and the end of June, the tree bears its white or yellowish flower spikes. If fertilized, the coveted olives thrive in autumn as drupes.
Following the exhausting growth, flowering and harvesting season, an olive tree is gradually reducing its energy requirements. From November to February / March, the plant almost stops growing, so no additional nutrients are needed. This behavior results in a time window for fertilization from mid-April to early September. During the winter breather from October to March, the nutrient supply is stopped.

Nutrient supply in the bucket

Since an olive tree has a conditional hardiness to a maximum of -10 degrees Celsius, it is mainly cultivated in a bucket. This has the advantage that the tree has the appropriate mobility to be admitted in heavy frost. In view of the limited substrate volume, the stocks of nitrogen, phosphorus, potassium and trace elements contained therein are consumed more rapidly than is the case with planted olive trees. Which fertilizers are considered for the pot culture and how they are administered, illuminate the following lines.

Mineral and mineral organic fertilizers at a glance

The Mediterranean garden is often resorting to mineral fertilizers. These preparations score with a quick availability of nutrients and a long-lasting effect. For uncomplicated administration, preparations in liquid form are readily available as sticks or powders. Classic artificial fertilizer, such as blue-grain, is less suitable for an olive tree because its exotic origin requires a special composition of ingredients. We have looked around among experienced olive tree gardeners and put together recommendable products for you:
Compo Mediterranean plant fertilizer
With an NPK formulation of 7.5 + 6 + 5.5 and supplemental micronutrients, this liquid fertilizer covers the needs of your olive tree. The special combination of nutrients aims at a reliable fruit and flower formation.
  • Price: 500 ml from 5,99 Euro
  • Dosage: 1 cap to 1 liter of irrigation water
Olive fertilizer HIGH-TECH Olea from Green24
The special liquid fertilizer for olives therefore comes with NPK 4.2 + 3.8 + 3.0 and other trace elements. As a concentrate, a 250 ml bottle is enough to produce 60 to 120 liters of liquid fertilizer.
  • Price: 250 ml from 8,85 Euro
  • Dosage: 1/2 cap to 1 liter of irrigation water
Mediterranean plants and olive liquid fertilizer from Cuxin
This liquid fertilizer uses a combination of mineral and organic components. The NPK composition of 6 + 6 + 7 is sufficient for 1 week and should then be refreshed. Pleasant for the austerity fox among the gardeners is the fertility, because from 800 ml of concentrate whopping 250 l of liquid fertilizer.
  • Price: 800 ml from 7,30 Euro
  • Dosage: 3-5 ml per 1 liter of irrigation water
Chrystal fertilizer Mediterranean plants
In stick form fertilizer for olive trees is also available. With an NPK composition of 14 + 7 + 8, the dosage covers the nutritional needs for 3 months.
  • Price: 24 pieces for 5,90 Euro
  • Dosage depending on the pot diameter
Only on olive trees tailored liquid fertilizer for the bucket are sown on the market. This narrow specialization is not necessary either. When selecting the product, it is sufficient if the fertilizer is declared for use on Mediterranean plant species.

Instructions for the allocation

The administration of liquid fertilizer to your olive tree is very easy. In the period from March to September, add the amount recommended by the manufacturer to the irrigation water.Since mineral and mineral-organic fertilizers have a high salt concentration, please pour before and after with clear water. If the fertilizer salts reach the roots on a dried substrate, unwanted burns can result.
If you have decided to use fertilizer in rod form, the intervals will be extended to 3 months. Press the rods centrally between the root ball and pot edge into the substrate and pour in with normal tap water.
Tip: If you replant your olive tree in spring, the normal nutrient delivery schedule will be suspended. The fresh substrate contains supplies for 4 to 6 weeks. Only after this time, a fertilizer is administered again.

Nutrient supply in the bed

Olive tree - Olea europaea

If your garden is within the Z8 hardiness zone or cheaper, enjoy the privilege of planting your olive tree in the bed. With its deep roots, the tree provides access to nutrient supplies in the soil, which is denied potted plants. This reduces the need for additional fertilizer. You absolutely should not do without it at least during the growing season.

Mineral and mineral organic products at a glance

To promote growth in the bed, mineral and mineral-organic fertilizers provide the olive tree with the needed energy quickly. The following products have emerged as efficient in daily garden practice:
Compo Mediterranean plants slow-release fertilizer
The NPK fertilizer with 14-7-15 consists of beads, which are covered to 40 percent. As a result, the active ingredients are released successively, which guarantees a combined immediate and long-term effect of 6 months. This has the advantage that you fertilize your olive tree only once per season so that it is completely supplied.
  • Price: 1,5 kg from 10,99 Euro
  • Dosage: 30 to 50 g
Lück's Mediterrano universal fertilizer
The professional fertilizer for the Mediterranean garden also includes the supply of olive trees. With an NPK formulation of 10 + 6 + 8, the effect extends to 8 weeks.
  • Price: 1 kg from 8,16 Euro
  • Dosage: 50 to 100 g
In principle, olive trees that have been planted can also be supplied with liquid fertilizer. From an economic point of view, this form of nutrient supply in the field does not make sense, because fertilizer grains are more productive and have a much longer lasting effect.

How to administer the fertilizer

In order to disperse the solid fertilizer with partly chemical constituents, we recommend putting on gloves. Sprinkle the beads or granules on the tree pulley according to the dosage recommendation of the manufacturer. Then pick up a rake and work in the fertilizer superficially. Then you water abundantly after. Do not administer fertilizers of any kind under direct sunlight. The early morning or late evening hours are better suited.
Tip: In contrast to lemon and orange trees, an olive tree is calf-loin. Please pour with normal tap water. However, if lime-free rainwater is used, the addition of vital lime in April and June compensates for the resulting calcium deficiency.

Organic fertilizer for tub and bed

Olive growers are increasingly striving to simulate natural conditions through the path of organic nutrient supply. Problems such as over-fertilization and environmental damage are undermined by ecologically-oriented care. If you agree with this setting, we would like to recommend the following options to you. To promote the growth of your olive tree in harmony with nature:
plants Jauchen
Organic liquid fertilizers for an olive tree in the tub are indeed loaded with a strong smell. However, they provide the exotic with all the nutrition he needs for vital growth. At the center of interest is nettle. This is made from 1 kg of young stinging nettle leaves that ferment for 14 days in 10 liters of rainwater. Stirred regularly and sieved at the end, the slurry is diluted with water in the ratio 1:10. Incidentally, you reduce the unpleasant odor by adding valerian or bentonite clearly.
  • Application: From March to August every 4 weeks overshoot the substrate
Hardly any home garden would like to forego the advantages of the compost pile. Here green waste, biowaste and kitchen remnants of busy soil organisms are recycled. The result is a nutritious natural fertilizer, which in particular serves an olive tree in the bed as an environmentally friendly energy supplier.
  • Application: In March and June, sprinkle with 3-5 cm of compost, work in and pour over
Horn chips

Horn chips

If the production of vegetable fodder and compost is too time-consuming, it will turn into horn shavings. The grated or ground horns of slaughter cattle produce a valuable organic fertilizer, which is characterized in particular by a high nitrogen content.Since other nutrients are present in only very small amounts, we recommend a combined application with compost.
  • Application: In March and June, sprinkle 80 to 100 g of horn shavings, work in and overspray
The seabirds of South America use their excreta to produce an organic fertilizer that is rich in nitrogen and phosphorus. Exactly these main nutrients are worth your olive tree, so that it can grow continuously. Guano is available as granules, liquid fertilizer or in rod form, so that this fertilizer is equally suitable for bedding and container plants.
  • Application: Every two weeks from March to August add to the irrigation water or work into the soil
Hardiness strengthen with potassium
If you have wintered your olive tree in the open air, you strengthen the winter hardiness with the addition of potassium. For this purpose, the nutrient supply will be modified accordingly in August. A reliable potassium supplier is comfrey. This is made from 1 kg of green plant parts and 10 liters of water, similar to nettle. Overspray the root disc several times after diluting the slurry with water in a ratio of 1:10.
As an alternative, the specialist trade offers potassium fertilizer. Known and proven products are Patentkali and Thomaskali. While Patentkali supplies pure potassium in the form of potassium chloride, Thomaskali also has valuable magnesium in its luggage. Sprinkle the granules on slightly damp substrate and pour. The concentrated charge of the nutrient strengthens the cell tissue, increases the cell pressure and lowers the freezing point in cell water. Since potassium also has a positive effect on cell extension, you will be promoting growth potential for the next season already in autumn.
In the course of the care measures, the relevance of the nutrient supply to the olive tree should not be underestimated. At least during its central growing season from March to September, the exotic is grateful if you help him with a fertilizer. An insight into proven mineral and mineral-organic fertilizers for beds and tubs gives you this guide. If you want to stay true to your ecological garden maintenance on the olive tree, you are on the right track with vegetable fava, compost or guano. Before this year's fertilization season ends in August / September, strengthen the winter hardiness with a potassium fertilizer.

Video Board: How to Grow Olive Trees.

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