Why Does my Tree Only Bear Fruit Every Other Year?

Last summer someone wondered aloud to me that there were not many wild flowers. This year, walking through the forest and wild meadow on the way to the orchard flowers are exploding from the ground, trumpeting life and the air buzzes with insects. I knew that 2016’s drought was a heavy one for our area, but the stark contrast with 2017’s wet spring is shocking.

My fruit trees are growing like fireworks, currant bushes I planted as twigs in May have quadrupled in size. The blueberries I planted this spring have already outgrown the ones that struggled to survive the dry summer. The grass last July was brown and flattened against the earth, now it makes a solid green curtain reaching my navel. It has turned the orchard into a maze where I have to guess the general direction of my Honeyberries to find them. The grass is taller than most of my berry bushes, but they don’t seem to mind. They all have a small radius where I have weeded and mulched the 'root zone'. After all the rain we’ve been having and my application of manure last week the orchard is singing. A monarch butterfly flutters past, floating above the tall grasses and flowering milkweed.

This week I’d like to address a question sent by a reader asking why their apple tree did not flower this year. I commonly get asked about this sort of fruit tree behaviour. The alternate version of the same question is: Why does my fruit tree only bear fruit every other year?

Trees run on a two year cycle when it comes to flowering. Trees want to produce fruit and seeds in order to create offspring. Imagine this year your tree is not producing any fruit. It is going to put a lot of energy into creating flower buds which will be able to produce fruit next year. Fast forward to next year, the tree is loaded with pollinated flowers and it is using all of its energy to ripen its immense load of fruit. This means that during this second year the tree has not been able to invest energy into next year’s flower buds. Year three we are back to a tree with no fruit.

In commercial orchards farmers control the fruit set by spraying the trees (in both conventional and organic agriculture this is a permitted practice, though the chemicals and techniques differ) in order to make them drop two thirds of the potential fruit load. This means the apples, or peaches, or plums that are left on the tree will ripen bigger and more flavourful.  At the home scale you can thin fruit by hand and ladder. My second year working in agriculture I spent a few days in spring thinning fruitlets on peach trees in a greenhouse in northern Ontario.  It is a slow process, but it improves fruit quality and ensures a harvest for next year.

Once trees have gotten used to biennial bearing, it is very difficult to restore them to annual bearing. As far as I am aware it is not impossible, but the ease at which you can bring those trees back is largely affected by how long they have been allowed to bear fruit in this way.

Your berries won't need thinning, they are pretty good at self-regulating. You should thin your grapes to improve flavour. The amount of grapes you leave on depends on the vineyard, the use for the grapes (wine or fresh eating), and the climate. Go with your gut, trust your instinct. Often when it comes to plants the power of observation will lead you to the right place.

Hoping you enjoyed a lovely summer solstice, have a lovely week.

-E.V.

Seven

Fall is a time to take stock. I tried a few things this year and learned a few lessons that will allow me to move forward into more focused plantings.

1.     Asparagus loves my site/soil/climate. Now I am trying to decide how much more to plant next year,  whether I should invest in roots or start plants from seed, and how to prepare the soil in advance for a massive planting.

Asparagus in July. Next spring it will be possible to harvest two spears per plant.

Dwarf cherry, the leaves slowly died
 back until there was only this little
 tuft left. It lives, for now.

2.       Cherries and miniature kiwis are not suited to my site. While the plants still cling to life, the amount of trouble they are having surviving does not bode well. In the spring I will replant these plants in a different area and plant more worthwhile plants in their place. There is no point leaving the prime top-of-the-hill real estate to a group of plants that won’t bear fruit. Better to fill the space with fruit trees that have been doing well.

3.       Plums and apricots are fantastic. More of these will be planted. I love them- they are tough and not many local producers have these crops which means should I ever take them to the farmer’s market I won’t have competition.

4.       Strawberries are delicious, and I am still harvesting in October. There are a lot of strawberry producers in the area, though, so I will keep my production for personal consumption only.

5.       Praying mantises live in Canada! They, along with snakes, love my bit of land and I expect this has to do with leaving tall grasses. I will keep the areas directly below my trees tidy in the future, but will leave wild areas for biodiversity. This will also help wild pollinator species as I want to introduce more species of flowers to those areas.

This red currant produced
DELICIOUS and sweet berries!

6.       Some red currant varieties are delicious and sweet. They bear fruit the second year. I will plant more. Saskatoons taste good and bear the first year, but the skin breaks upon picking. This destroys their potential for even short term storage.

7.       Since the field has no irrigation, there is no point in preparing a vegetable garden with non-drought tolerant crops. Most of my vegetables did not grow. 

I love my project. I love that I can make mistakes and learn and always keep dreaming of potential futures the project could have. I was afraid of taking this risk, but it is the most worthwhile risk I have ever taken.

Have a lovely week.

Apricots have beautiful red tinted foliage all summer long.

Munching on grape leaves, this is one fat caterpillar.

Welcome Mantis, bring your friends

I kept my word and have been watering my plants every evening, when possible. I had to miss a night here and there due to either social events or back pain, but overall my plants have been spoiled these past two weeks and they love it!

I see lots of new wood, new leaves, and the largest surprise of all- a few days after I started regular watering, the insects that were eating the leaves nearly all disappeared. One exception is one apple tree was attacked by several hundred miniature caterpillars, but after a bit of squishing they seem to have disappeared too.

Best of all- it finally rained yesterday. A welcome relief during our summer or drought.

There haven't been many pictures lately of Eden's Rise and that is because of how brown, crispy, and dead the field looks. The only colour comes from my trees and the particularly drought resistant golden rod that has taken possession of the bottom of the field. 

And yet life carries on. I don't know anything about snake life cycles but there are some miniature snakes hanging out near my asparagus and I assume they must be some recent hatchlings. I love snakes, and I am happy that having left the grass long means that they feel comfortable having a habitat in my garden. 

There are also voles, or some kind of fluffy round ball animals. They make holes and run away in a flash of dark fur when I approach them. They don't seem particularly destructive, but I don't appreciate when they make their holes right through the roots of my newly planted trees. They likely don't appreciate me planting trees right through their newly dug holes.

Today I made a new friend: a praying mantis! 

At first I was horrified, all my knowledge about praying mantises came from an episode of Buffy the Vampire Slayer where Xander was nearly eaten by a large Praying Mantis Demon Lady. Still, I had an idea that it was probably not eating my plants and likely even a welcome visitor for my garden. A quick google search when I got home confirmed it. It seems they have enormous appetites for aphids, mosquitoes, caterpillars, and a bunch of other bugs I have no immediate love for. Suddenly I love my new freaky insect friend, and I hope she invites all her friends over for a party! 

Have a lovely week, and take some time to look at nursery catalogues. If you want to start your own orchard or want to plant flower bulbs, then fall is a great time to plant. 

Lessons

Things have been a bit bleak lately. My plums are being massacred by insects, my strawberries are being ripped up by neighbouring horses, my blueberries look like they're burning from the leaf edges, my grapes are stunted. 

It's all my fault.

I frequently visit other people's orchards. Usually they are an abandoned side project and I've been proud to see that for the most part my trees look like those in orchards that were planted several years ago. My bubble burst when I visited my best friends who planted their orchard at the same time as I planted mine. Their trees have at least twice as much new wood, three times more leaves, and no apparent evidence of insect damage. 

I hated them.

Only briefly. (C'mon, a little jealousy keeps you human!)

Their orchard is very near their house, which allows them to water it daily. They need to. Their soil is sandy and has trouble holding water. Daily water and the endless heat and sunshine that we've had this summer are the perfect recipe for plant growth. 

I've started a new job this summer and with the busy whirl of finding my feet in a job that has me travelling around the province I've been neglectful of my orchard. I've only been watering Eden's Rise once a week, sometimes even less. No wonder my trees are being ravaged by insects, curling their leaves up, turning yellow, and my two weakest plants (weak since being planted too early and getting a hard knock by the frost) have finally died. 

I realised that far from being on par with those older orchards, I was on the road to having my orchard stunted and looking much as it does now even 4 years from now when ideally I should be in full production. Tough love is not what these young trees need.

Like a procrastinator who has realised the deadline is now only 2 days away I've been pushed into action by panic. I have been watering my orchard every day for 4 days now. To see change overnight seemed too good to be true and yet change is here!

My elderberry plants have added an inch of new wood in 3 days, my plum which had lost 60% of its leaves to insect damaged has now sneezed out a huge tuft of new leaves which totally hides the half eaten massacre within. The blueberries with crusty leaf edges are pushing out some fresh green leaves and the grapes which have been lacking in action nearly all summer have finally sent enough tentacles to reach the first wire of my trellis (about 4 feet) (not all of them, some varieties seem to be struggling more than the rest). 

Seeing an immediate result to my extra work is exactly what I needed for morale. I should have known thirsty plants don't have the energy to fight off predators, etc.

Things will be back on track now at Eden's Rise. It may take 2 hours a night to water my orchard, but let's face it. What else would I be doing?

Have a lovely week!

-Eden