Phyllostachys arcana ‘Luteosulcata’ seedlings – 2019 – Photo gallery

Photos, photos,…

This time, I decided to upload more photos and use less words. I think I wrote practically everything already. There’s nothing new regarding the seedlings, they upsized nicely and now grow as expected.

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Phyllostachys arcana seedlings – shooting season 2019

Early starters

First shoot on variegated seedling
First shoots started to emerge

Like each year since I’m growing the seedlings in their outdoor location, they started shooting before other bamboos. Fargesia Rufa started a week later and Phyllostachys pubescens ‘Moso’ seedling woke up 2 weeks after the seedlings.
Winter was mild and bamboos managed to get through it without much damage. Sun during the summer is much bigger threat to the variegated seedlings than winter weather. This year, we’ve experienced dry winter with little precipitation which made most of the bamboos I grow thirsty. Arcana seedlings were hit the most, since they are still growing in their raised beds with good drainage. Despite slight desiccation, seedlings kept the leaves without much visible damage. In early March first shoots started appearing on all but one seedling. By mid March the shoots started showing around all the seedlings. March 13th was their earliest shooting date so far.

Non-variegated seedling started shooting as well.

Nice upsize

Variegated seedlings showed stem variegation last year and I really hoped for a decent upsize, to make the variegation easier to notice. It seemed at first, that culm diameter won’t increase much, except on one seedling that started the first. They are growing many shoots that are around last year’s size and larger. Some should be almost twice the size. I’m sure they will look much better now. Variegated foliage is getting dense and it will finally shade out itself a bit. It needs protection from hot early summer sun, so I’ll try to help it with some additional shading as well.

First variegated seedling upsized quite a bit
First variegated seedling upsized quite a bit

Colorful shoots

Second seedlings shoot
Fast growing bamboo shoot

The shoots are still juvenile and need quite some time to start showing more mature characteristics. They all look arcana-ish, though. They also vary in colour a bit. The yellow culmed seedling has more reddish shoots, compared to all the darker ones. The two other variegated seedlings have darker shoots, but not nearly as dark as the shoots of green non-variegated plant which gets almost black. As the plants grow, the shoots started to turn a bit darker. Last year, the yellow culmed seedling pushed out only yellow shoots with a hint of red, now there’s some green on them as well.

Second seedling's shoots along the runner rhizome
Second seedling’s shoots. Nice upsize in both size and number of shoots.

The waiting game

Third seedling’s shoots

Variegated seedlings are slower to develop and it takes longer for them to mature. Last season, I could only check one of the seedlings for culm variegation, other two were too small to make a valid observation of green striping. This year, shoots on all the seedlings are thick enough and it will be interesting to finally see how they look like. It might be interesting to see if I can save the early set of yellow leaves. Last year sun scorched them before I could make a decent photo, but the bamboos looked fabulous. Sadly not for long.

First seedling upsized. Hopefully culm variegation will get more visible this year
Non-variegated seedling has dark shoots
nice upsize of variegated seedling
Nice upsize of second variegated seedling
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Shooting Calendar Update

Too much data…

As the Bamboo shooting calendar started getting more and more data, it became too large and it got impossible to place the large table online. It was getting harder to find shooting information for individual bamboo so I decided to do something about it before new season starts. I tossed away the data table completely.

Charts instead of tables

To improve readability and get rid of unnecessary data, table got replaced with charts. When I tried combining all the bamboo data into one graph, result was pretty poor – way too much information made the bars too thin. The result was unreadable graph which needed to be further dissected into graphs of individual bamboos.

Small tables are easy to read and hold all the needed information about shooting dates since I started growing bamboo. To make comparison between different bamboos easier, I decided I should introduce an average shooting date. There are some bamboos that skipped spring shooting or shot really, really late – I ignored those years. I did, however, use a shooting date in August in the Borinda fungosa chart. Borinda is a tricky bamboo that likes shooting late in the summer and doesn’t stop until winter.

Comparison of bamboo shooting dates
Comparison of bamboo shooting dates

Better or worse?

The trigger to change the way I run the bamboo shooting calendar was the site layout issue which prevented to load the page correctly. I managed to correct the issue last year, hardly. I also noticed someone gave the “Sucks” grade to the calendar sub-page. I’m not sure about the reason, but it might be the layout issue.
If any of you knows for a better way of making the calendar, which would allow me to add more bamboos and could stay readable after several years, I’m always opened for suggestions.

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Darkening of the foliage is evident.

Phyllostachys arcana ‘Luteosulcata’ seedling’s autumn transformation

Winter is coming

Leaves become much darker in the fall

Leaves become much darker in the fall. On the photo: Phyllostachys arcana ‘Luteosulcata’ seedling 2.

Tonight, we’ve seen snowflakes in the air for the first time this autumn. Before the arrival of winter and bitter below freezing temperatures, bamboos prepare and become hardier which makes them more likely to get through the winter unharmed. With first cold, all Phyllostachys bamboos started shedding some of their leaves to decrease water loss due to transpiration in cooler weather. Leaves also become thicker and coated with waxy protective layer, which also prevents desiccation.  The variegated seedlings had a lot of issues early in the growing season, but came out in excellent shape. They lost most of the damaged leaves from early summer and spring and ended up with new, mostly undamaged leaves. Sadly, some kind of fly destroyed most of the growing tips.

color change

Darkening of the foliage is evident.

Darkening of the foliage is evident.

Like expected, based on previous observations, leaves started changing their color in mid summer. First leaves were all completely yellow. Every following leaf got a bit more dark green color in the form of dark green striping. The last leaves that grew just before winter weather kicked in, started to look almost as green as the regular unvariegated seedling form. New leaves are also much less prone to environmental damage and should survive the winter intact. The gradual darkening also appears on the variegated seedlings culms. It seems that usually green variegation forms on sulcus, but can appear on other sides of the internode as well.

Difference between the two seedlings

Very bright yellow culm of the first variegated seedling. It does have some green striping which should become much more evident next season with an upsize

The most apparent difference is the culm color. I wrote about it some time ago and observations only became more evident as the shoots started maturing. The first seedling changed from lime green to bright yellow. There is almost no red tanning, but I expect it to start again in early spring and around shooting.  I’m not certain about the amount of culm variegation yet, since both the seedlings are still in young juvenile form. Based on last year’s progress, I expect them to upsize significantly. It should be interesting to see them develop.

Leaves are very similar on both seedlings and have the same type of progressive darkening. First leaves are all lime green or yellow and gradually start darkening. There seems to be a difference in how dark the leaves finally get, but it might be too early to tell for sure. It seems that the first seedling doesn’t get as green as the second one. It was also a little bit less prone to sun damage, which is quite strange, because it’s leaves were just as pale if not paler.

Second seedling often shows darker green coloration below the nodes

Second seedling often shows darker green coloration below it’s nodes

Second seedling has started with bright green culms and dark green striping. Sun tanning was extremely strong during early spring and it turned almost black on sun exposed shoots. With time it started fading to brown color with a hint of red. The lower parts that were not exposed to sun, changed from bright green to olive green color. Variegation of the culm appears on all sides of the culm, but is usually found as darker green sulcus. A lot of internodes have a dark green coloration below the node, some can extend further down as green striping. It is not as evident as green variegations of yellow culmed bamboos like Phyllostachys aureosulcata, at least not yet. Culm color might change a bit as the culms fully mature. Time will tell how they look like when they get there.

Darker green sulcus on yellow-ish olive green culm.

Darker green sulcus on olive green culm.

Variegated seedling in front and regular dark green form of Phyllostachys arcana 'Luteosulcata' seedlings

Variegated seedling in front and regular dark green form of Phyllostachys arcana ‘Luteosulcata’ seedlings

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