Acidophilic plants, list and care

Acidophilic plants, list and care

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Acidophilic plants, list and care. Cultivation techniques and advice on how to treat acidophilic plants, from the most common diseases to periodic fertilizations. Phytosanitary interventions, planting and pruning.

The period in which theacidophilic plantsrequire more care falls with the vegetative restart, in full spring. Trees that prefer an acidic pH should be pruned during this period. For all acidophilic plants, the treatments include preventive phytosanitary interventions and fertilizations. Let's see in detail.

Pruning of acidophilic plants

Shrubs and trees should be pruned in early April. Proceed just after flowering but before buds appear or vegetative buds begin to open.

Pruning is simple:

  • 1). First, any dry, sick or excessively thin branches are removed.
  • 2). The shape of the crown is observed and the branches are cut off to give the plant a disordered appearance.
  • 3). Young plants should be pruned more decisively, shortening the more vigorous branches that grow vertically upwards. The cut must be performed at a gem facing the outside of the foliage.
  • 4). Carry out a trimming by removing the basal branches.

Some acidophilic plants have a very dense vegetation. This is the case of azalea, rhododendron, pieris or boxwood.

In the case of azalea or boxwood, continue with a hedge trimmer. If the azalea is well developed, remove 20 to 30 cm of vegetation from the foliage with the hedge trimmer.

On the rhododendron and pieris, always make cuts in correspondence with a crown of gems.

Irrigation of acidophilic plants

With vegetative growth, plants need more irrigation, especially at the time of flowering. The soil, from late spring to summer, must always be moderately moist.

During irrigation, make sure there are no water stagnations: water stagnation is very harmful to acidophilic plants, causing premature rot of the root system.

The water to be used for irrigation must be"sweet"so as not to increase the pH of the soil and make it alkaline. To irrigate acidophiles, it is better to use:

  • Rain water
  • Distilled (such as the one sold in supermarkets to power steam irons)
  • Recovered from the air conditioner (the air conditioner drain water is distilled water)

Tap water should be excluded if it is too calcareous.


Among the essential care to devote tocultivation of acidophilic plantsthere is monitoring of the soil pH reaction. Irrigating the soil with calcareous water (hard tap water) means increasing its pH. With a high pH, ​​acidophilic plants cannot absorb the nutrients they need most.

For irrigation, it is better to use distilled water and enrich the soil with acid peat or guano, elements that have the ability to lower the pH of the soil. Those who believe they have a calcareous soil (with high pH, ​​alkaline), can test it by reading the guide onhow to measure the pH of the soil.

Fertilizer for acidophilic plants

The fertilization of the acidophilic plants must be performed in winter and will be able to supply nutrients to the plants until the months of June - July. As an alternative to winter fertilization, you can administer somefertilizeratacidophilic plantsin April.

The fertilizer for acidophilic plants varies according to the type of cultivation: are acidophilic plants grown in pots or in open fields? For potted acidophiles, fertigation is preferred, for those in open fields a granular fertilizer is chosen.

Fertilizer for acidophilic plants in pots

To be administered in April and June
Choose a liquid product with titleNPK(nitrogen phosphorus potassium) equal to 8-4-3 or 8-4-5 or again, if you already have acidophilic fertilizer at home with NPK 13-5-9 or 16-6-12 title with microelements, it will be just fine. For dosages, stick to those listed on the label.

Fertilizer for acidophilic plants in the garden

To be administered in April and June
If the acidophils are grown in open fields, administer a granular product with titleNPK(nitrogen phosphorus potassium) equal to 10-8-15; 12-4-8; 13-5-9 or 12-10-11 + 2. Typically, the granular formulations are enriched with organic substances such as guano or cornunghia.

Where to buy acidophilus fertilizer

It is important to always purchase the fertilizer with the appropriate formulation. In order not to be mistaken, it would be advisable to write down the "right" formulations on a piece of paper so as to choose adequately. Where to buy it? It can be bought at Garden Centers, agricultural consortia or by taking advantage of online sales. ON Amazon, for example, a good onefertilizer for acidophilic plants(rhododendrons, azaleas, heather, hydrangeas ...) can be purchased at a price of 18.99 euros with free shipping. For all information on the product mentioned, please refer to the Amazon product page: Compo NPK 13-5-9.

We have reported this product because it is enriched with other microelements useful for acidophilic plants and composed with natural guano.

Treatments and cures for acidophilic plants

Rhododendrons and Azaleas are particularly sensitive to attacks by the parasitePhytophthora cinnamomi, responsible for a form ofrot of the collarand roots. The first symptoms involve a vegetative wilting of part of the aerial vegetation or of the entire crown. For all information on treatment and prevention, please refer to the pagehow to cure acidophilic plants.

Acidophilic plants: list

Below we propose thelist of the acidophilic plants more common, that is, to thrive at their best, they need an acid soil. To simplify the identification ofacidophilic plants, we have divided them into three categories. It is clear that bulb acidophilic plants are ideal for flower beds and flower borders.


  • Andromede
  • Azaleas
  • Camellias
  • Strawberry tree
  • Heather
  • Gardenias
  • Hamamelis
  • Kalmie
  • Leucothoe
  • Magnolias
  • Mimose
  • Blueberries
  • Hydrangeas
  • Pieris
  • Rhododendrons
  • Skimmie


  • White fir
  • Spruce
  • Japanese maple
  • Webbed Maple
  • Birch
  • Chestnut
  • Beech tree
  • Liquidambar
  • Sequoia

Herbaceous and bulbous

  • Calle
  • Clivie
  • Dicentre
  • Horsetails
  • Ferns
  • Lilac
  • Lilies
  • Vinca

Some climbing plants such as ivy, jasmine and wisteria must be added to the list of acidophilic plants. Among the acidophilic hedges, boxwood and oleander are very common. Other acidophilic plants are: hibiscus, laurel (laurel), bougainvillea and heather.

Video: 6 Best hanging plants for your home u0026 balcony. Care u0026 Hanging plant decoration tips (June 2022).


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