Because they are such dependable flowering shrubs, hydrangeas are suitable for gardens of all sizes. Compared to most other plants, they flower for significantly longer periods of time—often months as opposed to weeks. Even after they have gone, the blossoms frequently retain their beauty, giving the garden interest even in the dead of winter. They make wonderful cut flowers as well.
They are simple to grow both in pots and outdoors, which is wonderful news. They only require the right environment, lots of water during dry spells, and sporadic feedings with the proper fertilizer, one that is designed to bring out the best in them.
In the open ground or in pots and containers, pot-grown hydrangeas can be planted at any time of year using Vitax John Innes compost. Pick for good, sizable containers that will enable the plants to flourish for many years. Smaller containers soon dry out.
Prepare the soil thoroughly before planting in open ground by incorporating a lot of garden compost or organic manure to strengthen the soil. To increase the humus content of the soil, which aids in water and nutrient retention in subsequent years, a few handfuls of 6X Natural Fibrous Fertilizer should be forked well into the soil.
When planting, mix a few handfuls of compost or Vitax Hydrangea Feed into the soil. This offers all the necessary nutrients for strong growth and lovely blooms.
The majority of hydrangeas may grow in full sunshine, but they prefer light shade. They thrive in dense clay and flourish in most soil types. They are therefore appropriate for the majority of newly constructed gardens and moist, compacted soils. They prefer plenty of water, as implied by their name, thus adding organic compost or organic manure on a regular basis helps retain moisture. Compost or bark mulch applied around the plants early in the growing season when the soil is moist also aids in moisture retention. Do this after they apply Vitax Hydrangea Feed annually.
The most well-known and colorful kinds of Hydrangea macrophylla are mophead and lace cap hydrangeas. Throughout the season, their flowers frequently change color, and the soil might have an impact on the color of some types. Some are blue on neutral to acidic soil and pink in alkaline environments. Use Vitax Hydrangea Colourant, added to the soil after planting or to the growing media in a pot, to preserve the blue color. Additionally, it can be diluted in water and sprayed on mature plants. However, be patient as this should preserve the color. It does not always function right away.
The compact growth of new hydrangea cultivars makes them perfect for tiny gardens. Many of these produce flowers on both the branches developed in the upcoming season and those from the year before. Consequently, they grow more flowers.
The well-known Hydrangea arborescens ‘Annabelle,’ which grows in a clump of tall stems with soft leaves and sizable frothy, white flowerheads, is another superb garden hydrangea. It looks its best when in bloom and provides a stunning spectacle when under the light shadow of trees.
The popularity of Hydrangea paniculata variants is rising. These bloom in the late summer, producing huge, conical flower heads at the tips of the stalks that are reminiscent of lilacs. The majority are white, occasionally with pink or burgundy flushes. They are ideal for the back of a perennial-filled border.
Leave the flower heads on Macrophylla hydrangeas during the winter, and in the spring, prune each stem back to the first pair of fat buds behind the flower. In the case of old, established plants, some of the older stems can be pruned back all the way to the ground in the winter.
Hydrangeas Paniculata: Hard prune in late winter, reducing by half to two thirds. Maintain a sturdy branch framework at the plant’s base. Strong shoots with flowers at the tips are produced as a result.
Hydrangea arborescens: In the late winter, trim all stems to a height of 15 cm (6 inches). Although this may seem severe, it guarantees strong shoots that should remain upright.
Feed by sprinkling Vitax Hydrangea after pruning, or at any time during the growing season. Feed the area around the plants, hoe or fork it into the soil’s surface, and then liberally water. One of the longest-lasting flower displays in the garden will result from your hydrangeas’ wonderful blossoms and leaves.
How should soil be prepared for hydrangeas?
- When roots are spread out, they grow more quickly. So that the root system has lots of room to easily expand, make the hole deep and wide enough. So that you may place the dirt at the bottom of the hole, where it will be most beneficial, keep it in a separate pile.
- Mix dehydrated cow dung, garden compost, or peat moss (up to a 1/3 concentration) into the topsoil pile to help the soil become looser. Make sure the peat moss you purchase is either granular peat or baled sphagnum. You may also mix in 2 or more inches of organic material or our Coco-Fiber Potting Medium evenly with the current soil.
You can get the perfect organic ingredients from your lawn, such grass clippings and crushed leaves. The grass and leaves not only decompose to replenish the soil’s nutrients, but also to assist loosen the soil. These can be collected in the fall in preparation for spring planting.
Common soil amendments:
- compost
- sand
- manure
- lime
- bog moss
Most soil types will benefit from the addition of organic elements like our Coco-Fiber Potting Medium and compost. Sand-like soil particles are bound together by organic compounds, improving moisture and nutrient retention. Additionally, they disintegrate clay and silt particles to allow water to permeate and allow roots to grow.
What kind of potting soil works best for hydrangeas?
We automatically think of huge plants when we think of hydrangeas because of their enormous foliage and larger-than-life blooms. However, hydrangeas actually come in not one, not two, but three sizes!
Regardless of the size of your area, locate the ideal hydrangea. Even hydrangeas can be grown in a container.
1. Small Is Everything. Choose a hydrangea that will grow well in your restricted space. Dwarf variations are small yet mighty little beauty. To select the ideal dwarf hydrangea for you, browse our Hydrangea Variety Guide. Then, locate a location that has the appropriate level of illumination.
2. Bold, large, and riddled with holes To create a statement, choose a pot or repurpose a container. Ensure that it has drainage holes alone.
3. Gold Soil Solid. Choose a high-quality, organic potting soil for hydrangeas because they require well-draining soil to thrive. If it possesses Myco-toneTM mycorrhizae, which use 30% less water than conventional soils, it gets bonus points.
5. Decide on the necessities. Water hydrangeas in containers when the top inch of soil becomes dry or when the plant starts to wilt. Feed your hydrangeas once a year in June or July with an organic fertilizer for the finest hydrangea care. Feed your hydrangeas with Holly-tone if you want them to be blue.
Big blossoms in a small space! Just picture how beautiful your hydrangeas will appear at your Memorial Day party shimmering in the sun or glimmering in the moonlight at your summer garden gatherings!
Which compost kind is ideal for hydrangeas?
According to John Negus, a garden expert for Amateur Gardening, “the ideal potting compost for shrubby plants is one with a high concentration of loam, such as John Innes No. 3.” The RHS (opens in new tab) suggests combining two parts of John Innes No. 3 and one part peat-free multipurpose compost for hydrangeas. Use an ericaceous compost as an alternative if you are growing blue hydrangeas and want to maintain the vibrancy of their color.
Even the best multi-purpose composts, according to John, “only have adequate nutrients for four to six weeks of growth, and after this is expended, plants will need supplemental feeding, either with a liquid or by top-dressing with controlled-release fertilizer.” From early summer to the end of flowering, feed with a liquid or top-dress in the spring.
John continues, “Loam-based composts retain moisture better than peat-based ones.” All potted plants, however, require constant watering because their roots are restricted and their compost is hidden by foliage, unless it rains heavily every day.
Can I grow hydrangeas using multipurpose compost?
For hydrangeas to change from pink to blue, the soil must be acidic and contain salts of either aluminum or iron.
We all learned in chemistry classes in school that distilled water has a neutral pH of 7. However, in horticulture, a neutral pH is typically categorized as 6.5. Any soil with a pH below 6.5 is considered acidic, and any soil with a pH above 6.5 is considered alkaline. A pH testing kit can be used to check the pH of your soil, and Greenshutters Nurseries & Garden Centre has these on hand. The inexpensive pH meters that are available are often not precise, so I do not advise using them. Often, seeing surrounding gardens and the local plant life is a simpler approach. It’s likely that your soil is acidic if nearby Rhododendrons, Camellias, and Pieris are flourishing in the soil.
Peaty or sandy soils are typical of acidic soils. Clay soils are typically not highly acidic. Chalky soils have a high pH. By incorporating Irish moss peat or ericaceous compost, you can increase the acidity of your soil. Ericaceous compost has an acidic pH range of roughly 5.0 to 5.5, while regular multifunctional compost has a pH range of 6.0 to 6.5.
Irish moss peat is particularly useful for mulching since it has a pH of about 4.0, which is much too acidic for most plants to thrive in. However, when combined with neutral or alkaline soil, it lowers the pH of the soil. Once a year, mulch with Irish moss peat and let the worms to work the peat into the soil to maintain the acidity of the soil around a plant.
As an alternative, hydrangeas can be grown in containers. Although hydrangeas can thrive in both multifunctional and ericaceous compost, it is recommended to plant them in the latter if you want them to turn blue.
If your soil is deficient in aluminum or iron salts naturally, you can easily increase them by putting Hydrangea Colorant into the soil. People claim that adding rusty nails to the soil or compost will turn hydrangeas blue; however, as I have never tried it, I am unable to confirm if this is true or false. On the other hand, Hydrangea Colorant is a combination of Iron Salts and Aluminium Sulphate. When potting or planting, it can be added to the soil. For established plants, you can also dissolve the Hydrangea Colorant in water and give your hydrangeas a weekly drink during the growing season (March to September). Your light pink kinds will become blue if you do this, while your dark pink varieties will turn mauve-blue.
Grow your hydrangea in neutral or alkaline soil, though, if you want it to stay pink.
Where do hydrangeas thrive in nature?
Learning the fundamentals of how to plant hydrangeas can help you save time and money, just like with most other items in your garden. You’ll improve your chances of enjoying big, vibrant hydrangea flowers for years to come by picking the appropriate site, getting the soil just right, and planting correctly.
When should I plant hydrangeas?
The best time to grow hydrangeas is in the fall, followed by early spring. The goal is to provide the shrub lots of time to develop a strong root system before it blooms. Early in the day or late in the day are the ideal times to plant. The day’s cooler hours provide relief from heat exhaustion. Water new plants frequently until they get established.
Locations to plant hydrangeas
The first step is knowing where to grow hydrangea plants. Hydrangeas are frequently grown in beds adjacent to houses or fences. This is so because hydrangeas prefer the mild early sun to the hot afternoon sun. A protected area with sunny mornings and shaded afternoons is the ideal spot to plant hydrangeas. This is frequently found on the north or south side of a house. Avoid planting underneath trees since it could cause competition for nutrients and water. Flowers and leaves can both be destroyed by strong winds.
hydrangea-friendly soil
The soil needs to be rich in organic matter for hydrangeas to thrive. Drainage is important. Although hydrangeas prefer damp soil, they cannot stand standing water. Root rot can be brought on by wet, poorly draining soils. Your hydrangeas could pass away in a matter of weeks. Consider adding a lot of compost to your heavy soil before planting to increase the soil’s quality.
Methods for planting hydrangeas
Simply dig planting holes that are 2 feet wider than the root ball for planting hydrangeas. So that your plant lies level with or just higher than the surrounding soil, match the depth of the hole to the size of the root ball. You can improve water drainage away from the plant’s base by making a small mound.
The best way to grow hydrangeas
Simple propagation methods can multiply a single hydrangea into several more. The optimal time to layer bigleaf and panicle hydrangeas is in the early to mid-summer. You only need to:
- Close to your hydrangea plant, make a tiny trench.
- Bend a branch such that the middle of the branch meets the earth in the trench (six to 12 inches of branch should extend past the trench).
- Where the branch meets the trench soil, make scuff marks on the bark.
- After the trench is filled, cover it with a paver, brick, or stone.
- The branch can be transplanted to a different area once it has established its own root system over time.
Hydrangeas with smooth or oakleaf leaves produce new growth from underground stems. Simply separate the baby plant from the main plant by digging it up. After then, it can be moved to a new spot.
Is hydrangea garden soil suitable for them?
It is simple to identify the ideal soil types for hydrangeas. They mostly demand soil with good drainage and a pH level that is in the middle of the range, just like the majority of other common garden plants.
Although they can handle a wide range of pH values, hydrangeas do best between 5.5 and 7.5. Because Bigleaf Hydrangeas can have a variety of colored blooms depending on the soil, gardeners obsess over whether they need alkaline or acidic soil.
You can adjust your soil’s composition to make some hydrangea kinds’ blossoms a different color. Just keep in mind that changing the pH of soil takes time. To keep the blooms the proper color, you will need to add acidic or alkaline elements frequently.
The composition of the soil is an additional issue to acidity. Because loam or sandy-loam soil allows water to drain and provides enough moisture for the plant, hydrangeas thrive there. If you’re prepared to loosen the soil by adding compost, peat moss, or other organic ingredients, you can grow hydrangeas in sandy loam or clay soil.
Keep in mind that hydrangeas don’t actually care too much about their soil. There is a good possibility that hydrangeas will thrive in the soil if other plants do. You just need to worry more about the soil when you try to change the environment to change the blossoms on your hydrangeas.