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Description
philodendron holtonianum juvenile Philodendron holtonianum – Foliage FactoryPhilodendron holtonianum Philodendron holtonianum is an Araceae species from Colombia, valued for its narrow juvenile blades and mature foliage that develops into a long, slender, tri lobed form. The mature lobes stay slim, giving older leaves an elongated outline rather than a broad divided shape. Young plants usually show simpler leaves first. With steady upward growth, bright filtered light and a vertical surface for the stem, the foliage can
Philodendron holtonianum
Philodendron holtonianum is an Araceae species from Colombia, valued for its narrow juvenile blades and mature foliage that develops into a long, slender, tri-lobed form. The mature lobes stay slim, giving older leaves an elongated outline rather than a broad divided shape.
Young plants usually show simpler leaves first. With steady upward growth, bright filtered light and a vertical surface for the stem, the foliage can become much longer and more divided over time.
Philodendron holtonianum juvenile leaves and mature form
- Family: Araceae, the aroid family.
- Foliage: Green leaves with a narrow outline and thinly coriaceous texture.
- Juvenile growth: Young leaves are narrow and simpler in shape.
- Mature growth: Older leaves can become very long and tri-lobed, with narrow lobes.
- Growth habit: Elongating climbing growth with nodes along the stem.
- Indoor development: Mature leaf shape develops gradually as the climbing stem gains height and stability.
- Growth rate: Moderate in warm, bright, humid conditions, slower when kept cool, dry or unsupported.
- Safety: Toxic if chewed or swallowed by pets or children.
Mature leaf development in Philodendron holtonianum
Philodendron holtonianum moves from narrow juvenile blades into a more divided adult leaf shape as the stem extends. Mature leaves can become very long, slim and thinly leathery, with lobes that remain narrow along the blade.
In habitat, Philodendron holtonianum is associated with wet tropical forest in Colombia, where climbing stems develop in warm, humid, filtered-light conditions. Indoors, a stable support gives the stem a vertical path and helps the leaves develop with less twisting or bending.
Care for Philodendron holtonianum climbing growth
- Light: Give Philodendron holtonianum bright filtered light. Low light can produce weak, stretched growth and delay mature leaf shape.
- Support: Provide a pole, plank or similar vertical surface while the plant is still juvenile.
- Substrate: Use a chunky, airy aroid mix so the climbing root system has oxygen between waterings.
- Water: Let part of the potting mix dry before watering again. Wet roots in a dense mix can yellow the lower leaves.
- Humidity: Higher humidity helps long new leaves unfurl with less tearing or sticking.
- Temperature: Keep growth warm and stable; cold, wet conditions can stall the stem and damage roots.
- Repotting: Repot when roots fill the pot, the mix has compacted or the support no longer fits the stem height.
- Fertilising: Feed lightly during active growth; reduce feeding when light levels and growth slow.
- Propagation: Propagate from stem cuttings with at least one node, kept warm and humid while rooting.
- Pruning: Remove damaged leaves at the petiole base or shorten an overlong stem above a healthy node.
- Semi-hydroponics: Semi-hydro can work when roots are adapted gradually and the reservoir stays clean and oxygenated.
Philodendron holtonianum unfurling issues and delayed mature leaves
- Juvenile leaves: Simple narrow leaves are normal on young plants before the adult blade shape develops.
- Delayed mature shape: Low light, lack of support or interrupted growth can slow the shift into the long divided form.
- Torn new leaves: Dry air or uneven watering can make thin new blades stick while unfurling.
- Yellowing leaves: Check the root zone for dense, wet substrate or a pot that dries too slowly.
- Pests: Inspect new leaves and petioles for thrips, spider mites, mealybugs and scale.
Philodendron holtonianum toxicity
Philodendron holtonianum contains insoluble calcium oxalate crystals. Keep leaves, petioles and stems away from pets and children that may chew plant material.
Botanical background of Philodendron holtonianum
The genus Philodendron was described by Heinrich Wilhelm Schott in 1829 in Wiener Zeitschrift für Kunst, Litteratur, Theater und Mode. Its name combines Greek philo- or philein, meaning loving, with dendron, meaning tree. Schott also described Philodendron holtonianum, which was published in Bonplandia in 1859. The epithet holtonianum is formed from Holton with the Latin adjectival ending -ianum, indicating a dedication to Holton.
A Colombian climbing Philodendron with narrow juvenile growth and long, slender mature leaves that develop their divided shape on support.
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4.3 ★★★★★
Based on 16 reviews
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Product Reviews
★★★★★ 5
Great Timex Watch
Color: Black/Yellow
This Timex Ironman watch arrived on time and is of great quality. I have used these watches for years and have NO complaints about their longevity, accuracy, or dependability. I will definitely purchase again if needed.
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Reviewed in the United States on May 1, 2026
★★★★★ 5
Item as described.
Color: Dark Blue
A timeless tradition of a great design and useful watch. Have been using this watch design for over a 30 years.
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Reviewed in the United States on May 27, 2026
★★★★★ 5
Great thowback to the OG Ironman, but Amazon's listing gets it undue negativity.
Color: Black/Yellow
Amazon's listing is not very good with it's wording so this watch has gotten undue negative reviews.
I've seen this model listed as both the Endure 30 and the Original 30 Shock, it has 1 alarm with 3 different modes (not 3 separate alarms), 200m WR, ISO shock resistance, (reverse) Indiglo with night mode, 2 time zones, 12/24hr time, 30 lap stopwatch, 24hr countdown timer (repeatable), and day/date (MM.DD or DD.MM). Its basically a slightly updated feature set compared to an Ironman 8-lap.
This watch is great, it's got the look of the original Ironman 8-lap with modern guts. The only minus for me is it could be a little slimmer on the wrist, but I also didn't realize it was shock resistant when I bought it. For comparison, it is a few mm smaller in all dimensions than a G-Shock G2300/G2310/GW2310 series. The band is similar to G-Shocks in that it is formed/molded around the wrist but like the case it's still slimmer in the way it wears around the wrist. Not as slim as an F91W but not as massive as any G-Shock basically. The module has a better display with bigger numbers than the above mentioned Casios. With the exception of the lap memory, the G23## G-Shocks have more features, but the Endure 30 is much easier to use thanks to the display and larger buttons.
If you want 3 alarms you need the very similar Classic 30. The main differences being the Classic has 3 separate alarms (not 1), occasion reminders and 3 time zones but losses the Ironman 8-lap look, the shock resistance and it's only 100m WR. The Classic seems to come in at least two case varieties (chunky or slim), two sizes and many color combinations.
If you only need the Endure 30's features but want a different shape/size/style/slimmness, I believe the Essential 10/30 and BASIC Transit models are functionally the same with only different lap memories, WR, and no shock resistance.
Unfortunately, Timex doesn't easily identify the actual module used in a watch like Casio, so the best way to figure out what features a watch has is to lookup the watch model on the Timex website. Of course the manuals do not always match the marketing names they have used over the years (Endure/Classic/Essential/etc), and each manual covers a few shapes/sizes of watch but just search for the model number in the manuals sections and you'll eventually find the right one. If no manual pops up right away delete digits from the right end of the model number until a manual is found, I believe those last digits only indicate slight variances in style/color that are not important to functionality.
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Reviewed in the United States on May 31, 2021
★★★★★ 1
Good interface but unwearable watch band
Color: Black
This review will be divided into 3 sections: looks, usability, and comfort.
LOOKS
I guess there's not much to say as style is very individual. I think this watch looks good for what you pay for it.
USABILITY
What I liked about this watch is that I could use it right out of the box. I have had basic Timex digital watches before (never this exact interface), and I was able to quickly figure it out. A quick glance at the manual to make sure I wasn't unaware of any features and I had 100% grasp of all the watch's features. The Timex interface puts many others to shame with its user-friendliness. On this model Timex has added a 'guide' on the display that tells you which button will do what-- increase number, decrease number, etc. This is cool. If you're even remotely handy with interfaces, once you learn this one, you'll know it backwards and forwards, and even if you forget, there's the in-display guide.
The functions are standard for a Timex digital-- time and date, stopwatch with lap timing, countdown timer, and alarm. There is a 2nd time zone but no dedicated mode for it. You access it by holding the 'start' button when in the time mode. I like this feature as I occasionally need to know when to call people in 1 particular time zone. But, for example, if you are often switching back and forth between 2 time zones, you will have to reset the time to have the watch display the correct time at all times. And if you need more than 2 time zones, sorry, out of luck. Stopwatch (chrono) is good. Don't use the lap counter much but it seems to work well. Some have complained that the 'start' and 'stop' should be on the same button. Overall, it is a very uncluttered and usable interface.
At first I thought it was very inaccurate at timekeeping, but it must have gotten accidentally reset because over the few months since I set it, it's only a couple seconds off from time.gov. very good timekeeping.
It seems very water resistant. I have taken it swimming, surfing, and it held up fine. I haven't thoroughly tested its shock resistance but it has done some hiking and climbing where it got banged around a bit and it still works.
COMFORT
Unfortunately what the watch has in user interface usability, it totally lacks in comfort. The strap is a huge disaster. It is very rigid and uncomfortable. The 'waffling' or indented designs near the bezel on each side of the strap create areas where the strap digs into the wrist. with any prolonged wearing, it gets worse and worse until your wrist is begging you to take it off.
The strap is just absolutely godawful. I have read reviews where G Shock owners said it was very good, well though out and comfortable. If that is the case, I shudder to imagine what a G Shock is like on the wrist. If constant pinching around sensitive areas on the side of the wrist seems like it would be the kind of thing to bother you, avoid this watch. I tried swapping it for another Timex band, which amazingly enough was uncomfortable it a DIFFERENT area! It seems Timex doesn't put much thought into their bands-- no part of the band should dig into the wrist. That's just obvious.
CONCLUSION
I really want to like this watch, I do. It's good-looking. It's very usable in terms of features. But the strap is terrible, so much so that the watch is unwearable. Unfortunately it took me about a week to figure this out, during which time the watch got sufficient wear so that it is no longer new, returnable condition. I am keeping it, using it as a 'beater' watch in the gym (I put my watch on the ground in the gym). If you purchase it I recommend you wear it for a good few hours while not doing anything that will scratch it, so that you can return it if need be.
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Reviewed in the United States on October 5, 2014
★★★★★ 5
Compared to g-shock?
Color: Black/Yellow
Firstly random public reviews can be comical…”it’s has a battery, terrible, One star” or “I don’t like yellow, one star” omg peoples do better. I’ll review this while comparing to an older style of g-shock from the same era. I’ll start by saying this timex rocks, for me in my mid 50’s it’s so retro and nastalgic, brings back memories, I may have even owned this model back in the day. What’s great about it- the display, larger digits than the typical g-shock and they are super crisp, clear and easy to read. The indiglo is awesome. This is the most accurate quartz watch I have aside from the atomic g-shocks that adjust themselves daily. I prefer a chunky watch and the g-shocks do a better job in that department. i feel this watch is rugged, but I’d still give the nod to g-shock in this department. 200M water resistance is the gold standard and this watch has it which I love for peace of mind for any water based activities. This is a 5 star watch at a great price. I still love some aspects of a g-shock better but its just preference.
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Reviewed in the United States on February 11, 2026