The Patmore Green Ash, otherwise known as the Fraxinus Pennsylvanica ‘Patmore’ or Green Ash, American Ash, Canadian Ash, Red American Ash, Red Ash, White Ash, is a somewhat well known tree plant native to the Southeast, Northeast, and the Southwest of the United States.
Best known for its average maintenance and fast growth, this tree will likely liven up your house (or garden) with its dark green colored leaves. But, only if you learn how to take proper care of it for it to thrive.
Fortunately, taking care of your Patmore Green Ash is not too difficult – as long as you follow our guidelines in this Patmore Green Ash Care Guide. Now let’s get started.
In order to take proper care of your Patmore Green Ash you’ll need to keep in mind the following guidelines:
- Water: The Patmore Green Ash grows best with watering each week. Increase the frequency of watering when it gets hot.
- Light: Keep your Fraxinus Pennsylvanica ‘Patmore’ in an environment where it can receive full sun on a daily basis.
- Soil: Make sure to keep the Patmore Green Ash in soil with moist but well-draining properties, so ideally, one that is made of sand, loam, and clay.
And as with many other plants, these are the only three care factors you need to remember to make sure your Patmore Green Ash is, for the most part, healthy and well to survive.

Scientific / Botanical Aspects
In botanical terms, the Patmore Green Ash belongs to the Oleaceae family, the genus Fraxinus and the species Pennsylvanica, hence its scientific (or botanical) name Fraxinus Pennsylvanica ‘Patmore’ (FRAK-si-nus pen-sil-VAN-i-ka).
As with other Fraxinus’s, the Patmore Green Ash is a deciduous plant, which means it will shed its leaves annually once autumn comes.
Growing Region
The Patmore Green Ash is a plant native to the Canada to Western Central & Eastern U.S.A. This is why the Fraxinus Pennsylvanica ‘Patmore’ is used to growing in specific regions such as the states in Southeast, Northeast, and the Southwest of the United States.
Knowing your plant’s native region is very useful, as it can give you tips on which environment is best for your Patmore Green Ash. If you keep it in mind, you can try to replicate these conditions at home, and you’ll likely end with a healthier plant.
With this in mind, the Fraxinus Pennsylvanica ‘Patmore’ will be most used to the heat zones in the 4 – 9 region, as the plant hardiness level falls between 3a, 3b, 4a, 4b, 5b, 5a, 6a, 6b, 7a, 7b, 8a, 8b, 9b, 9a and the ideal climate zone is between 1, 1A, 1B, 2, 2A, 2B, 3, 3A, 3B, 4, 5, 6, A2, A3.
Growth and Size
Growth
In terms of size and growth, the Patmore Green Ash is a relatively fast grower, which makes things tricky for any plant enthusiast.
Size
But, how big does the Patmore Green Ash actually get? What should you expect in terms of size? Let’s dive right in…
The Fraxinus Pennsylvanica ‘Patmore’ can grow up to 50′ – 70′ (15m – 21m) in 50′ – 70′ (15m – 21m) and 35′ – 50′ (10.5m – 15m) in 35′ – 50′ (10.5m – 15m).
Also, expect it to grow in a wonderful rounded shape, which is something worthwhile to remember when making your garden landscape plans.
Water
In terms of watering, the Patmore Green Ash 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 Fraxinus Pennsylvanica ‘Patmore’ grows best with watering each week. Increase the frequency of watering when it gets hot.
Which is why it is considered a plant with relatively average needs in terms of water.

Watering
As a rule of thumb, you should remember to keep your Patmore Green Ash 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, moist, occasionally dry, and occasionally wet properties to keep the right moisture levels at all times.
In our experience, the famous ‘thumb’ or ‘finger’ test is what works best for the Patmore Green Ash since with it, you will be able to give it the right amount of water, every time – regardless of the environment or placement where you do decide to keep it.
Soil Mix
As mentioned earlier, the Patmore Green Ash prefers to have soil with good drainage, moist, occasionally dry, and occasionally wet properties at all times, reason why you need to make the soil mix out of sand, loam, and clay.
This is why most experts agree that the Patmore Green Ash requires soil with loam (silt), and sand, which will give you the right conditions it needs.
In addition to this, expert gardeners recommend having preferably neutral to acid soil.
Light and Exposure
In terms of light & exposure, the Patmore Green Ash requires full sun in order for it to thrive under the right conditions.
Most experts agree that this tree will do well as long as you keep it in full sun, and it will be able to grow properly.
Specifically, we recommend that you place your Fraxinus Pennsylvanica ‘Patmore’ 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).
Season
Being a deciduous plant, the Patmore Green Ash will shed its leaves annually once autumn comes.
But, you can expect it to have its ‘prime-time’ during the spring (mid, late), the summer (early, mid, late), and during the fall.
Flowers
You can expect your Patmore Green Ash to flower around the spring months from April to June (spring).
The Patmore Green Ash produces some beautiful white, or purple/lavender, gold/yellowgreen, and red/burgundy flowers around this time of year.
Foliage
The leaves from the Patmore Green Ash have a beautiful dark 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 Fraxinus Pennsylvanica ‘Patmore’ to be around (3-6 inches) in size.

Attracts, Tolerance and Resistance
The Patmore Green Ash is well known for being able to attract birds, so keep that in mind when choosing your plant, as you’ll likely end up finding one or another in your garden.
Additionally, it has a special tolerance for wet soil and animals like deer, so don’t worry if any of these come along, your Fraxinus Pennsylvanica ‘Patmore’ will be fine.
Garden
Does your Patmore Green Ash have any garden recommendations? Does it serve any gardening purposes? Here’s how you can get the most out of your new plant.
Most Fraxinus Pennsylvanica ‘Patmore’ owners agree that this tree will look great in most rustic gardens of all types.
Other owners consider that they complement well most gardens of prairie and meadow styles.
In particular, the Patmore Green Ash’s best use for landscaping within your garden is as very wet areas, firescaping/fire wise, or a woodland garden.
Companion Plants
Patmore Green Ash’s do well with some other plants beside it. One good companion plant is the Pinus taeda, which will pair up nicely with your leafy friend.
Others consider that a nice Gelsemium rankinii will work well too, so choose whichever you find works best for you!
Conclusion
And we’ve come to an end. Fortunately, that’s everything you need to know about your Patmore Green Ash to keep it safe and sound in your garden or home. Enjoy planting!