How to grow eucalyptus

Loukykvět  /  Návody  /  How to grow eucalyptus

How to grow eucalyptus

Alongside growing cut flowers, we also grow eucalyptus, because greenery is essential for bouquets. Every year, we start our eucalyptus from seeds; part of the crop goes into our bouquets, while the rest makes its way to you as young plants. To help your eucalyptus thrive, we've decided to write a short and, as far as possible, honest guide.

Eucalyptus

The most reliable way to grow it is to keep your eucalyptus outside, on a patio or balcony, and bring it inside (into a conservatory or a cool hallway) as soon as there is a risk of frost.

We don't really recommend it as a houseplant. Only if you have a very sunny apartment. It definitely won't thrive next to a television where there's hardly any daylight, or near a fireplace or other heat source.

Eucalyptus will create a lush bush and brighten up your summer terrace, but don't expect it to replace an oak tree in your yard. The eucalyptus varieties we grow don't have a trained root system, and they won't grow into massive trees. If you buy a small eucalyptus from us in May, it will look similar to the large one by August.

Which eucalyptus is this for you?

We'd like to set expectations right from the start — eucalyptus is for advanced growers. If you're just starting with eucalyptus, follow this guide. Over the summer, it will practically take care of itself; the eucalyptus will grow like crazy, and then, at the start of autumn, everything might suddenly go wrong... Even so, it will bring you joy during the summer, it will smell wonderful, and from time to time, you can snip off a sprig for a vase or dry it out.

The eucalyptus you can buy in our shop comes as a young plant. The small one is in a 7×7 (cm) pot, and the large eucalyptus is in an extra-large 25×25 (cm) pot. The small eucalyptus is 6+ months old, while the large one is 9+ or sometimes even 14+ months old. On the farm, we grow eucalyptus as small bushes from which we harvest stems to use in bouquets; these bushes reach heights of ~ 1.8 m.

Life cycle

From May to September/October, it will grow like crazy. It grows incredibly fast outside during the summer, and your eucalyptus will double in size in just a few months. Once autumn arrives, with shorter days, less light, and lower temperatures, the eucalyptus will stop growing.

Be prepared that it won't grow at all in winter, not even an inch. It might survive, but you'll likely be diagnosing one problem after another—an edema from high humidity here, something drying out there—it's a tough period. But don't worry, as soon as the days start getting longer and there's more light, the eucalyptus will wake up, and you'll see it sprouting new shoots. At that point, you've become an advanced grower because you've successfully overwintered your eucalyptus.

Even though we overwinter eucalyptus on our farm, we prefer to say it's quite advanced, and you should be prepared for a scenario where you might not succeed in overwintering it. It can simply dry up overnight. You'll hardly notice it, and you won't even know exactly what caused it—whether you underwatered or overwatered it. It will just turn into a biscuit.

Step by step

Location

Sunny, full sun, as much sun as possible. On our farm, we have the eucalyptus on a plot that gets sun all day, and we even have black landscaping fabric underneath them to intensify it. Choose the sunniest spot in your garden for your eucalyptus.

Substrate

As a potting mix, you can use regular potting soil based on peat or standard garden soil. Mix the substrate with sand in a 1:4 ratio—one part sand to four parts soil. The sand ensures the substrate is well-drained so your eucalyptus doesn't rot.

Pot

We recommend gradually repotting your eucalyptus into a larger pot. If you order a small eucalyptus from us, it will arrive in a 7×7 (cm) pot. The first thing you should do is repot it into a slightly larger pot. Do not move it into giant containers right away.

Reach for a pot one size larger, i.e., 9×9 (or 12×12 and similar). If you repot it into a massive container immediately, there is a risk of drowning it during watering. To give you an idea: on the farm, we start eucalyptus in seedling trays (ø 3 cm), then transplant them into 7×7 pots, then move them up to 12×12, and only then do they get their final largest pot, 25×25. Every time we skipped a pot size, we paid for it later.

Support

Until your eucalyptus gets nice and strong, we recommend providing support. We use a bamboo stake and simply tie the eucalyptus to it.

Watering

Water the pot only when the substrate has dried out completely. Be careful, though—eucalyptus can barely survive 4–8 days on dry soil before it won't recover. You need to balance watering well; the eucalyptus cannot stand in water, but it also won't survive in bone-dry soil.

The best method is bottom watering—place the pot in a saucer. The plant will absorb exactly what it needs, and you can pour out any excess water from the saucer.

During the summer, we water our eucalyptus once a week using drip irrigation, letting water drip directly to the roots for 1–2 hours to ensure they are thoroughly soaked. In the winter, while overwintering our eucalyptus in a heated greenhouse, we reduce the frequency of watering and water them about once every 2–4 weeks. Always check to make sure they aren't standing in water.

Fertilizing

From April to August, you can fertilize your eucalyptus; once a week is ideal.

Do not fertilize with nitrogen; instead, choose a fertilizer with a higher proportion of potassium (K). Among ecological fertilizers, you can use, for example, ProKton or Free PK. For synthetic fertilizers, choose Kristalon Bloom and Fruit, or any other fertilizer where potassium (K) is the primary component in the composition. Kristalon Bloom and Fruit has an NPK composition of 15-5-30, meaning there is twice as much potassium (K).

Fertilizer composition

Fertilizers always list their composition and NPK ratio: N is nitrogen, P is phosphorus, K is potassium. The composition of a fertilizer might be listed as "19-6-20," which means it contains 19 parts N, 6 parts P, and 20 parts K. If you are looking for a fertilizer with a higher potassium content, the third number (K) should be at least twice as large as the other two (N and P). The previously mentioned Kristalon Bloom and Fruit has twice as much potassium (K).

Nevíte si rady?

Napište nám na kvet@loukykvet.cz nebo přes Facebook, rádi pomůžeme.