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April 23, 2020 · 5 Comments

How to Pollinate a Meyer Lemon Tree

How to

I’ve had a Meyer lemon tree for about three years. In spring of 2018, it flowered like crazy and set a bunch of fruit. Even though it was a small tree, I harvested eight large lemons and made a delicious pie with them. Success!

Lemon flowers are very pretty and have a lovely fragrance. The yellow material is the pollen.

In 2019, things did not go so well. The lemon tree flowered in spring, but then dropped all of its flowers and produced no fruit. It spent the summer outside (as it usually does), then flowered again in late fall. No fruit, which did not surprise me because citrus needs a lot of sun and even in my south window, it’s pretty dark in Minnesota from November through March.

A week or so ago, my lemon tree started to flower again—abundantly. The timing is perfect so I decided to help the tree along to get some fruit. Meyer lemons are “self-pollinating,” which means you don’t need a second tree to get fruit. The pollen on the tree will cling to the stigmas in other flowers, which creates the little lemons. Outside, wind and insects will do the pollinating for you, but inside it may need assistance.

Be the Bee: Lemon Tree Pollination

The procedure is simple. Get a small paint brush or Q-tip swab and rub it into the flowers that have lots of pollen on their anthers. (These are male flowers.) Make sure you get some of the yellow pollen grains on your brush or swab. Then go to a flower that has the bulbous stigma (also called a pistil). Gently touch the edge of the swab or brush on the stigma. You want to see some grains of pollen present on the stigma after you have pollinated. Continue to do this as long as the plant is flowering. Wait to see the little lemons start developing. If you achieve pollination and are lucky, those little lemons will be big delicious fruit in about eight months.

The photo is a bit blurry, but you can see the grains of pollen on the stigma.

My lemon tree will go outside some time in mid-May. Temperatures have to be consistently about 50 degrees for a lemon to be happy. I’ll also be adding some fertilizer to the plant, which needs a fair amount of nitrogen but not much phosphorus or potassium. In the three-plus years it has been in this pot, I’ve only added fish emulsion. Finally, come fall, I’ll be re-potting my tree. While lemon trees can grow well in a fairly small pot, they do like fresh soil every few years.

For more on growing lemons, check out this excellent bulletin from the Wisconsin master gardeners and this step-by-step pollination guide. I’ll let you know how many lemons I get over on my Instagram account.

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Comments

  1. Susan Melton says

    February 23, 2022 at 4:01 pm

    I live in SC and have my Meyer lemon tree on our enclosed porch. So far there are many blossoms that have opened but don’t appear to have a stigma. Will that come later?

  2. Mary Schier says

    February 24, 2022 at 10:07 am

    Hmmm. Is it an immature tree? That might be the cause. It also seems that some years you get lots of fruit and other years not so much. You might want to check out my interview with Steven Biggs, an expert on growing lemons in pots, on my podcast. https://www.buzzsprout.com/1208462/6474427-growing-lemons-in-the-north-with-steven-biggs

  3. Susan says

    February 25, 2022 at 6:43 am

    Thank you. Interview was very interesting! Perhaps my tree is too young. Had it for 1 year and although full of blossoms we only had 1 lemon. Blossoms looked they were becoming tiny lemons but then dropped. Hopefully more successful this year. I had thought pollinating myself would be helpful but maybe just not mature enough yet.

  4. Gail says

    June 6, 2022 at 4:07 pm

    When I tried to get the pollen off a flower with a small brush or a q tip the flower fell off

Trackbacks

  1. 150 Tips: Growing Citrus and Tropicals Indoors - Minnesota State Horticultural Society says:
    February 14, 2022 at 3:43 pm

    […] year, give plants a light tap or shake to move pollen around when they are following. Or, you can be the bee. Recommended citrus for northern homes: Calamondin orange, ‘Meyer Improved’ lemon and […]

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