The Clematis ‘Yaku010A’ Plant Patent #23,887 (Phyllis™ Clematis) Full Care Guide

The Phyllis™ Clematis, otherwise known as the Clematis ‘Yaku010A’ Plant Patent #23,887 or Jackman’s Clematis, Large-Flowered Clematis ‘Jackmanii Superba’, is a rather well known climber plant by gardening enthusiasts around the world.

Best known for its low maintenance and moderate growth, this climber will likely liven up your house (or garden) with its green colored leaves. But, only if you learn how to take proper care of it for it to thrive.

This is why all the topics you need to know in order to achieve this will be covered in this Phyllis™ Clematis Care Guide. Ready? Let’s go!

In order to take proper care of your Phyllis™ Clematis you’ll need to keep in mind the following guidelines:

  • Water: The Phyllis™ Clematis prefers constant watering each week and more during the hot season.
  • Light: Keep your Clematis ‘Yaku010A’ Plant Patent #23,887 in an environment where it can receive partial to full sun on a daily basis. 
  • Soil: Make sure to keep the Phyllis™ Clematis in soil with moist but well-draining properties, so ideally, one that is made of clay, loam, chalk, and sand.

That’s it – sunlight, water and soil! The basic 3 fundamentals for all plant care, and with the Phyllis™ Clematis this is no exception. With these three elements, your leafy friend will live healthy and happy.

Phyllis™ Clematis plants

Scientific / Botanical Aspects

In botanical terms, the Phyllis™ Clematis belongs to the Ranunculaceae family, and the genus Clematis, hence its scientific (or botanical) name Clematis ‘Yaku010A’ Plant Patent #23,887 (KLEM-a-tis).

As with other Clematis’s, the Phyllis™ Clematis is a deciduous plant, which means it will shed its leaves annually once autumn comes.

Growing Region

The Phyllis™ Clematis is a plant native to the English hybrid.

You might be wondering why your Phyllis™ Clematis’s native region is important. Well, if you know where your plant originally came from, you’ll know which environment conditions it prefers, and with it, knowledge on how to replicate it at home.

With this in mind, the Clematis ‘Yaku010A’ Plant Patent #23,887 will be most used to the heat zones in the 1 – 9 region, as the plant hardiness level falls between 4b, 4a, 5b, 5a, 6a, 6b, 7b, 7a, 8b, 8a, 9b, 9a and the ideal climate zone is between 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, A2, A3.

Growth and Size


In terms of size and growth, the Phyllis™ Clematis is a relatively moderate grower, which makes things somewhat easy for any plant enthusiast.


But what exactly does this mean for your Phyllis™ Clematis? How large a pot should you consider, how tall, how wide can it get? Let’s jump in…

The Clematis ‘Yaku010A’ Plant Patent #23,887 can grow up to 10′ – 12′ (3m – 3.6m) in 10′ – 12′ (3m – 3.6m) and 2′ – 4′ (60cm – 120cm) in 2′ – 4′ (60cm – 120cm). 

These dimensions make the Phyllis™ Clematis a relatively large climber compared to others, so it’s best to keep this fact in mind since it will affect where you want to keep yours at home.

Also, expect it to grow in a wonderful compact shape, which is something worthwhile to remember when making your garden landscape plans.

This is why experts recommend keeping an area of approximately 48″ (120cm) free so the Phyllis™ Clematis can spread to its best extent.


In terms of watering, the Phyllis™ Clematis is a fairly simple plant to take care of.

This is mostly because it has a straightforward watering schedule and somewhat regular watering needs.

Specifically, most experts agree that the Clematis ‘Yaku010A’ Plant Patent #23,887 prefers constant watering each week and more during the hot season.

Which is why it is considered a plant with relatively average needs in terms of water. 

Phyllis™ Clematis up close


As a rule of thumb, you should remember to keep your Phyllis™ Clematis in soil with moist but well-draining characteristics, as these will guarantee the right conditions for your plant to grow and thrive. 

When you consider this, this is why you should aim to choose soil that has good drainage, and moist properties to keep the right moisture levels at all times. 

However, in our experience, the best solution to knowing the right amount of water for your Phyllis™ Clematis is with the ‘thumb’ technique. Basically, you insert your finger into the soil, and based if you feel the soil moist or dry, you determine if it needs any water, which is the most appropriate way to go about watering your leafy friend.

Soil Mix

As mentioned earlier, the Phyllis™ Clematis prefers to have soil with good drainage, and moist properties at all times, reason why you need to make the soil mix out of clay, loam, chalk, and sand.

This is why most experts agree that the Phyllis™ Clematis requires soil with clay, loam (silt), and sand, which will give you the right conditions it needs.

In addition to this, expert gardeners recommend having preferably alkaline, acid or neutral soil.

Light and Exposure

In terms of light & exposure, the Phyllis™ Clematis requires partial to full sun in order for it to thrive under the right conditions. 

Most experts agree that this climber will do well as long as you keep it in partial to full sun, and it will be able to grow properly.

Specifically, we recommend that you place your Clematis ‘Yaku010A’ Plant Patent #23,887 in little to partial shade (only 2-6 hours of direct sunlight a day), to full and direct sun (more 6 hours of direct sunlight per day).


Being a deciduous plant, the Phyllis™ Clematis will shed its leaves annually once autumn comes.

But, you can expect it to have its ‘prime-time’ during the summer (early, mid, late).


You can expect your Phyllis™ Clematis to flower around the summer months from July to September (summer).

In particular, this climber is well known for its repeat flowering and showy flowers around the plant enthusiast community.

The Phyllis™ Clematis produces some beautiful pink, or purple/lavender, bluepink, and red/burgundy flowers around this time of year.


The leaves from the Phyllis™ Clematis have a beautiful green color during most of the year.

In particular, they have a compound (pinnately, bipinnately, palmately) arrangement with a opposite organization in its leaves.

You can expect the leaves from your Clematis ‘Yaku010A’ Plant Patent #23,887 to be around (1-3 inches) in size.

Phyllis™ Clematis and bees

Attracts, Tolerance and Resistance

The Phyllis™ Clematis is well known for its tolerance to animals like deer, so don’t worry if any of these come along, your Clematis ‘Yaku010A’ Plant Patent #23,887 will be fine.


Does your Phyllis™ Clematis have any garden recommendations? Does it serve any gardening purposes? Here’s how you can get the most out of your new plant.

Most Clematis ‘Yaku010A’ Plant Patent #23,887 owners agree that this climber will look great in most mediterranean, asian/zen cottage, and rustic gardens of all types. 

Other owners consider that they complement well most gardens of informal and cottage, city and courtyard, and in traditional garden styles. 

In particular, the Phyllis™ Clematis’s best location within your garden is in wall-side borders, patio and containers, pergolas, arbors, trellises, beds and borders, and in walls and fences, others use it for landscaping in a urban garden, specimen, ground cover, espalier, cutting garden, container, border, or a woodland garden.

Companion Plants

Phyllis™ Clematis’s do well with some other plants beside it. One good companion plant is the Acer, which will pair up nicely with your leafy friend.

Others consider that a nice Rosa will work well too, so choose whichever you find works best for you!


So that’s it! These are the main plant care requirements that you need to keep in mind in order to have a healthy Phyllis™ Clematis in your garden or home.

Martin Duran

Hey y'all! My name is Martin Duran and I am from Cali, Colombia. Since 2018 I have been learning about plants and how to take care of them. Here's is my journey... “The clearest way into the Universe is through a forest wilderness.” ― John Muir

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