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Doug Tallamy, a professor of entomology at the University of Delaware, shares how you can plant an oak tree in your own backyard.
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Oaks have a reputation for being hard to transplant successfully. This can be true if you’re seeking instant gratification and attempt to plant an oak that is too big, or a potted oak that is too old. Oaks develop massive root systems which they grow quickly when young—it’s one of the reasons oaks are so good at protecting our watersheds and topsoil. To transplant an oak that’s already several feet tall you have to root prune it nearly to death. If it survives the transplant, it will grow very little for years afterwards as it tries to develop new roots. It is hard to believe but oaks planted as acorns or young saplings catch up and pass 15-foot transplants in just a few years. Finally, large transplanted oaks are expensive, often thousands of dollars for a tree with a 50 percent chance of dying in the first year.
Several Quercus rubra (red oak) line a driveway. At maturity, red oaks reach 50 to 75 feet tall with an equal spread.
Photo by: shapencolour / Alamy Stock Photo.
Photo by: shapencolour / Alamy Stock Photo.
Potted oaks have similar problems. Oak roots grow so fast that a potted oak can become root-bound in a single season. A potted oak that is 5 feet tall may be root-bound, with a high probability of choking itself to death once in the ground. Trees that have been root pruned when successively moved to larger containers have a good chance of survival, but will not be as vigorous as a tree planted directly from an acorn.
Oaks also have a reputation for being slow-growing. I have heard landscape professionals tell clients not to plant oaks because they won’t live long enough to enjoy them. But that is hardly the case. I am writing this as I sit under a willow oak that I planted 16 years ago from an acorn. It is now over 30 feet tall, and I can assure you, I am enjoying it!
The good news is that all of these problems—transplant difficulties, root-bound plants, and expense—can be easily avoided if you plant your oaks when they are small. Here’s how:
Choose the location wisely. Although some species remain small even when mature (e.g. dwarf chestnut oak), most oaks will become large trees much faster than you think, so picture the area a mature oak (and its root system) will occupy in 20 years.
Start small. Planting an acorn or small seedling is the best way to go. Collect acorns as soon as they fall from the tree.
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Acorns from species in the white oak group germinate right away in the fall, so they need to be planted immediately. They will send a radicle (embryonic root) straight down into the soil and spend the winter that way. Then, in the spring, the young plant will shoot up towards the sun. Acorns from the red oak group wait until spring to germinate, so they can be stored through the winter with a little bit of soil in a sealed plastic bag in the refrigerator.
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In both cases, I recommend starting your acorns in deep pots and protect them from mice, chipmunks, and squirrels until the plant is well above the soil line. Tend them in their pots through the first summer and then plant them into your yard in early September. Be sure to water them until they are well established.
If you purchase an oak, buy the smallest one the nursery offers. But remember, acorns are free!
6 Foot 5
Protect your oak from deer. I use five-foot-high wire fencing material and form a cage about 5 feet in diameter around the oak. This might seem like overkill at first, but your oak will fill the cage in just a few years. When the tree grows well about the cage, remove the cage and loosely wrap the trunk with plastic or wire fencing material to discourage damage from “buck-rub” (bucks like to rub their antlers against trees with a 2- to 3-inch diameter trunk). This scrapes the bark off and can easily kill the tree. Be sure to remove the fencing before the tree grows into and around it, and remember that young bark can get sunburned too.
Sketch 3 4 1 download free. Don’t fertilize your oaks. Oaks are adapted to soils low in nitrogen and doses of fertilizer can trigger rapid growth periods that split the bark or stimulate lush leaf growth that is prone to insect infestation.
Use the right soil. If you are worried that your soil is poor, inoculate the planting site with a little soil and litter from under an established oak of the same species. This introduces the mycorrhizae species that aid nutrient exchange in your oak.
Create the right-size planting hole. You can make the hole wide, but don’t make it deep. The most common source of transplant mortality is from planting a tree below the root-line. Many people dig a deep hole and back fill to the appropriate depth. But the loose soil in the bottom of the hole usually settles a few inches, just enough to sink your tree into the danger zone. Dig your hole no deeper than the root ball of your tree. If you like to dig, make your hole wide, but do not make it deep.
Mulch the right way. You can mulch with oak leaves but do not build a volcano of mulch next to the trunk. This may cause trunk rot.
Editor’s note: For more information on planting oaks, see the University of California page on How to Grow California Oaks. (Although the title refers to “California,” the information is universally appropriate.)
This bonus content accompanies “An Evolutionary Pair”—an article about how the relationship between blue jays and oak trees has shaped the natural world and how you can help that relationship continue—in the Autumn 2017 issue of Garden Design magazine.
During normal use of your stair lift it is likely it will eventually display a fault error code or the main batteries will need to be replaced. While some problems can easily be resolved many will require a service call. The guide below is a list of the Acorn stair lift error codes and what they signify. You may also find our basic troubleshooting guide to common stairlift problems helpful.
If your lift is beeping or making a chirping noise it’s an indication it’s not receiving a charge voltage and needs immediate attention. This beeping sound can occur even when the lift is not being used. If there are no lights or sounds coming from the lift, and you’ve checked the battery isolation switch you’ll need to schedule service. We serve the Northern Virginia, DC, and Maryland areas.
Acorn stair lift codes models 120/130
Explanation of the codes, what they are telling you and what to do.
Stair lifts have many features to keep you safe and operational at the same time. If your lift stops working the codes on your lift can tell you what the problem is. It is important to note the codes flash in a sequence of a letter then a number. Adobe reader for mojave. Here are the most common codes for the Acorn 120 and 130 stair lifts.
C1- This code is normal, it’s to let you know the batteries are charging.
C4- The internal lift batteries are fully charged. All Acorn lifts run off the batteries, the household power is supplied to charge these batteries.
It’s normal for the C1 AND C4 codes to alternate while charging. The lift can flash C1 then C4 and back to C1 while in battery charge mode.
C5- The charger is connected but not charging. This is a battery fault problem and requires a service call. The batteries will need to be replaced and the lift charging circuit should be checked.
C6- The batteries are fully charged, C6 Code is displayed for the 130 models and is a normal operating code.
C7- T700Models Power supply charger voltage too LOW.
C8- Power supply charger voltage too HIGH.
C9- Battery fault charger is connected but not charging.
A1- Stair lift is beeping, the lift is not parked on a charging station. The A1 code is telling you the lift is not charging. Move the lift to a charging point. If the lift doesn’t stop beeping check the power supply. If the power supply is plugged into a working outlet and the lift continues to beep call for service as soon as possible. The lift will need to be serviced or the main batteries will lose their charge and the lift will stop working.
C4- The internal lift batteries are fully charged. All Acorn lifts run off the batteries, the household power is supplied to charge these batteries.
It’s normal for the C1 AND C4 codes to alternate while charging. The lift can flash C1 then C4 and back to C1 while in battery charge mode.
C5- The charger is connected but not charging. This is a battery fault problem and requires a service call. The batteries will need to be replaced and the lift charging circuit should be checked.
C6- The batteries are fully charged, C6 Code is displayed for the 130 models and is a normal operating code.
C7- T700Models Power supply charger voltage too LOW.
C8- Power supply charger voltage too HIGH.
C9- Battery fault charger is connected but not charging.
A1- Stair lift is beeping, the lift is not parked on a charging station. The A1 code is telling you the lift is not charging. Move the lift to a charging point. If the lift doesn’t stop beeping check the power supply. If the power supply is plugged into a working outlet and the lift continues to beep call for service as soon as possible. The lift will need to be serviced or the main batteries will lose their charge and the lift will stop working.
Normal operating codes.
A2- This is a normal code when the lift is traveling up with the armrest switch.
A3- Is also normal and should be on when the lift is traveling down using the armrest switch.
A4- Normal and the same as A2, lift traveling in the up direction but is shown when using the remote control.
A5- Normal and the same as A3, the lift is traveling in the down direction but is shown when using the remote control.
A3- Is also normal and should be on when the lift is traveling down using the armrest switch.
A4- Normal and the same as A2, lift traveling in the up direction but is shown when using the remote control.
A5- Normal and the same as A3, the lift is traveling in the down direction but is shown when using the remote control.
E Codes – Indicate an ERROR and is typically a problem that can be easily fixed.
E1- The footrest safety edge has been activated in the up direction, check footrest for an obstruction.
E2- This is also the footrest sensor but in the down direction, check the footrest for an obstruction.
E3- The safety edge on the carriage has been activated in the up direction. The safety edge is different from the footrest sensor. The safety edge is on the carriage of the lift and wraps around the stair lift rail. The top safety edge will have a key switch and battery switch located on the front.
E4- This is also the safety edge on the carriage but for the down direction. It will look like the top safety edge but without any switches on the cover.
E5- The seat is not in its normal operating position. Try swiveling the seat to reset the sensor.
E6- T700Models Starcraft free download. is also the seat position sensor. Turn the seat to its riding position and check that it is locked in place. If the seat has been removed make sure the plastic cam is aligned and in the correct position.
E2- This is also the footrest sensor but in the down direction, check the footrest for an obstruction.
E3- The safety edge on the carriage has been activated in the up direction. The safety edge is different from the footrest sensor. The safety edge is on the carriage of the lift and wraps around the stair lift rail. The top safety edge will have a key switch and battery switch located on the front.
E4- This is also the safety edge on the carriage but for the down direction. It will look like the top safety edge but without any switches on the cover.
E5- The seat is not in its normal operating position. Try swiveling the seat to reset the sensor.
E6- T700Models Starcraft free download. is also the seat position sensor. Turn the seat to its riding position and check that it is locked in place. If the seat has been removed make sure the plastic cam is aligned and in the correct position.
E7- T700 Model Low battery, move the lift down and park on the nearest charging contact. The lift won’t move up until the E7 code is cleared.
E8- The batteries are low and need to be charged.
E9- The lift key-switch is in the off position. Check the key-switch is turned to the on position. The function of the key switch is to disable the controls and does not actually remove power from the lift and controller.
E8- The batteries are low and need to be charged.
E9- The lift key-switch is in the off position. Check the key-switch is turned to the on position. The function of the key switch is to disable the controls and does not actually remove power from the lift and controller.
F Codes – FATAL ERROR codes indicate a problem that will need a stair lift service tech.
F1- Board relay fault, you will likely need a replacement board call for service.
F2- Brake fault will usually require a service call. Try turning the lift off and resetting.
F3- Motor fault call for service.
F4- Overcurrent to the motor fault. Recommend service tech.
F5- Battery fault, try parking the lift on a charging contact. With the F5 code, the batteries have reached a critical level. Parking the lift on a charging station MAY recharge the batteries and correct this problem. How long it takes to charge the batteries will depend on their age and condition. Recharging the batteries should not take more than 24 hours. In many cases, the batteries won’t recharge and will need to be replaced by a service technician.
F6- Over limit means the lift went past the normal limit and shut off. Try hand winding the lift away from the end of the track. Before running again it will need to be determined why the lift went too far. Recommend service call.
F7- OSG or over-speed governor, the lift should be check by a service technician. The OSG or Overspeed governor is a device that monitors the speed of your stairlift to prevent it from traveling past its normal rated speed. This is a safety device that should never be tampered with.
F8- System lockout, try turning the power off and resetting the lift, call for service.
F2- Brake fault will usually require a service call. Try turning the lift off and resetting.
F3- Motor fault call for service.
F4- Overcurrent to the motor fault. Recommend service tech.
F5- Battery fault, try parking the lift on a charging contact. With the F5 code, the batteries have reached a critical level. Parking the lift on a charging station MAY recharge the batteries and correct this problem. How long it takes to charge the batteries will depend on their age and condition. Recharging the batteries should not take more than 24 hours. In many cases, the batteries won’t recharge and will need to be replaced by a service technician.
F6- Over limit means the lift went past the normal limit and shut off. Try hand winding the lift away from the end of the track. Before running again it will need to be determined why the lift went too far. Recommend service call.
F7- OSG or over-speed governor, the lift should be check by a service technician. The OSG or Overspeed governor is a device that monitors the speed of your stairlift to prevent it from traveling past its normal rated speed. This is a safety device that should never be tampered with.
F8- System lockout, try turning the power off and resetting the lift, call for service.
H Codes – Hardware Faults – Lift will not Operate Requires Tech
H1- Multiple error codes likely SW-1 safety short to ground, requires service
H2- Multiple error codes SW-2 safety short to ground, requires service
H3- More than one error has occurred
H4- More than one error, safety device fault
H2- Multiple error codes SW-2 safety short to ground, requires service
H3- More than one error has occurred
H4- More than one error, safety device fault
Stair lifts are machinery and should always be serviced or repaired by certified lift technicians.
The Acorn lift operates with the use of two stairlift batteries. There are many reasons these batteries can stop working and won’t charge. The batteries are internal and should only be serviced or replaced by experienced stair lift technicians that are familiar with the Acorn stairlift.
Transformer/Power Supply
The batteries on the Acorn 130/120 receive a charging current from an external power supply. This unique transformer has an output of 15VAC 2500mA and is a plug-in-style transformer that should also be checked when your lift is serviced. A transformer problem will cause other issues with your lift and should be repaired immediately. Acorn lifts are battery-powered and need a continuous charge supplied by this transformer. Any problems with the transformer will cause your lift to stop working.
Programming the remote controls
Occasionally it may be necessary to reprogram the remote controls. The sequence to program the Acorn 130 and Brooks remote controls is below. Note: The programming sequence for the newer 130/T700 model is different.
- Push the control switch at the end of the armrest to run the lift down to the bottom limit.
- Once at the bottom limit position swivel the seat until you see the E5 error code and stop.
- Press and hold BOTH the armrest control in the down direction and the down button on the remote until the lift beeps.
- Swivel the seat back into the normal operating position and test the remote in the up and down direction.