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Indoor Gardening and Houseplants: Dividing Boston Fern

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Kenarden
Bar Harbor, ME

December 15, 2009
1:16 PM

Post #7370427

I posted this over in the Ferns board but nothing came of it so I thought I'd try it over here and see if I get a response.

I have some very nice aureate Boston Ferns that came to me as the merest "opportunity" to own a plant that any online nursery could have dared to sell. Luckily, they have flourished and I have some very over grown plants now that I'm considering dividing if this possible/advisable.

Can one divide Boston Ferns successfully? If so, any tips will help.

Thank you,

Karl
3jsmom31
zone 6a, KY

December 15, 2009
1:22 PM

Post #7370441

http://www.ehow.com/how_2319472_divide-boston-ferns.html

I think it is pretty easy, and you'll have many ferns after you do the job :).
wintergardener
Valatie, NY
(Zone 5a)

December 15, 2009
2:07 PM

Post #7370612

Karl, I have successfully divided a number of Boston ferns. I can tell you that the procedure is messy, brutal, and definitely not for the faint-of-heart. Here goes:

First, knock the plant from its pot, and lay it out on a large surface that you've covered with newspaper. With a sharp knife, brutally slice the fern into quarters. This will give you a better view of the individual ferns that can be cut out and potted. Cut away these small sections. Be brutal.

Next, remove enough of the roots to permit potting each section into a 4-inch clay pot. Use a humussy soil mixture, such as pastuerized leaf mold, lightened with a small amount of perlite.

I have found that new divisions, if given a bright but sunless location, cool temperatures, and adequate humidity, recuperate fairly rapidly. I set them on a humidifying bed of pebbles and water beneath fluorescent lights.

Hope this helps!
Kevin
www.agardenforthehouse.com


This message was edited Dec 16, 2009 7:40 AM
wintergardener
Valatie, NY
(Zone 5a)

December 15, 2009
2:11 PM

Post #7370636

3jsmom31 is right - you'll have many new ferns from the procedure. These will make nice birthday presents for your plant-minded friends.
Kenarden
Bar Harbor, ME

December 15, 2009
8:09 PM

Post #7371680

Thank you both very much.

I suspect that I did one of two things wrong in the past: gave up too early +/or didn't provide enough humidity in the after care. So...on we go!

Stay warm,

Karl
HoosierGreen
Danville, IN

December 18, 2009
11:17 PM

Post #7380893

In my experience, two helpful hints. If you can wait until late spring, the new divisions will grow like weeds if you set them outside in light shade for the summer. And, don't be afraid to completely cut off the old fronds of the divisions. They will very quickly grow new, balance foliage. I divide two plants every spring and by June the divisions are huge. I use them in the garden and on the deck, then give them away at the end of the summer. I pot the divisions in at least 8" pots, they grow so fast!
daisylovn
(Tracey) Mobile, AL
(Zone 8b)

December 19, 2009
1:57 PM

Post #7381928

I also needed this info. Kenarden, Thanks for asking it..
Kenarden
Bar Harbor, ME

December 21, 2009
3:29 PM

Post #7387814

I have made the divisions and everything looks good for the wear.

Do you think that I'll be able to cut them down and have them flush out if I do it in the spring?
HoosierGreen
Danville, IN

December 21, 2009
8:10 PM

Post #7388489

Most definitely. They grow like weeds when spring arrives. Be sure to fertilize them at that time too. Actually, they will start sending out lots of new fronds in late January as the days get longer. That'll be a signal to fertilize them at that time. I think you'll be surprised at how they'll look by summer (Ever wonder how garden centers and big box stores have all of those lush ferns for sale every year, at such cheap prices? Now you know.)
Debsroots
Northwest, MO
(Zone 5a)

December 23, 2009
12:39 PM

Post #7392679

I have a Boston Fern that is now three years old and very large. I am overwintering it in my garage. I am so fearful that if I divide it...that it may die. Will they go for a long time without being divided and still continue to grow and prosper??
HoosierGreen
Danville, IN

December 23, 2009
4:17 PM

Post #7393158

Debsroots: I'd be surprised if your fern dies completely, but it will gradually lose it's vigor and decline when it gets too crowded in the pot. (You'll know when the plant starts sending out growth around the edges and out the drainage holes.) If you like keeping one larger plant, rather than dividing it, just repot it into a larger pot in the spring. If it looks ratty, cut back all of the fronds. It will quickly grow a full head of new ones. Boston ferns don't have just one main crown for growth. The plant is made up of lots and lots of smaller crowns, so when you divide it you don't have to worry and can just hack it into pieces. And when it's cut back, each of the small crowns grow back out to make a full plant again. Be sure to fertilize it in the spring when you repot or divide or cut back. I use a 3 month time-release like Osmocote, but you can alternatively use a diluted solution every time you water, or normal mix every two weeks during the growing season.

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