Roses forum: Floribunda rose problems

Views: 514, Replies: 6 » Jump to the end

IndreJann
Jun 12, 2017 8:06 AM CST
Hello,

I am very new to gardening, so forgive me for lack of knowledge. I hope you can help me with this problem I am having. I recently bought this beautiful floribunda rose, already in a pot. The lady at the store told me that any potting mix will do just fine, as long as I add some compost as well. I had universal compost so I mixed it in. The bottom of the container has holes, and I put some tiny rocks at the bottom of the container, as advised by the lady in the store. I have the container in my terrace, under a half roof. Basically, if it rains vertically, it rains on the rose. Recently we had some heavy rains and just a little sun and I noticed that the leaves started yellowing. I live in Bergen, Norway. It has very mild weather throughout the year. Lots of rain, not much sun. Any advice you can give me?
Thumb of 2017-06-12/IndreJann/a1be63
Thumb of 2017-06-12/IndreJann/eb2690
Thumb of 2017-06-12/IndreJann/2fecb2

Name: Porkpal
Richmond, TX
Charter ATP Member I was one of the first 300 contributors to the plant database! Keeper of Poultry Farmer Roses Raises cows
Garden Ideas: Level 2 Celebrating Gardening: 2015 Plant Identifier
porkpal
Jun 12, 2017 3:39 PM CST
Your rose looks very healthy to me. Most roses are subject to fungus diseases that cause yellowing leaves, but yours does not seem infected. Just remove any discolored leaves and provide it with as much sun as possible and water when dry. I think your rose will do well.
Porkpal
Name: Lyn
Weaverville, California (Zone 8a)
Garden Ideas: Level 1 Garden Sages Celebrating Gardening: 2015
Image
RoseBlush1
Jun 12, 2017 9:21 PM CST
Welcome IndreJann


There are a lot of things that cause the yellowing of leaves. When you see that, for one reason or another, the rose has decided to abandon the leaf.

Your goal is to maintain moist soil in your container. So, if your soil is too wet ... heavy ... the rose will show its distress with yellow leaves. If your soil is too dry, the rose will also show its distress with yellow leaves.

The lady at the store told me that any potting mix will do just fine, as long as I add some compost as well. I had universal compost so I mixed it in. The bottom of the container has holes, and I put some tiny rocks at the bottom of the container, as advised by the lady in the store.

I think the soil in your container is probably too wet and your rose is letting you know that it doesn't like it ... Smiling

Roses need good drainage whether they are grown in a container or in the ground.

Commercial potting soil mixes are designed for good drainage. When you add compost to them, you make the mix heavier and it generally holds moisture and does not drain as well. I don't know how much you added, but this is one thing for you to consider.

Another reason I think the soil may be too wet, it that you put rocks in the bottom of the container. I don't know what "some" is, so you may have put a small amount or a larger amount. However, either way, putting gravel or rocks at the bottom of a container actually inhibits drainage rather than improving drainage.

I know it sounds counter-intuitive, but putting rocks ... larger particles than the soil particles ... at the bottom of a container creates a perched root zone and holds moisture. This technique is used to slow drainage in many gardening situations.

Also, you need to lift your container so that it is not flush with the hardscape, so that water can drain out of the container. If you put a tray under the container, you should empty it after watering so that the plant does not take up moisture through the drainage holes.

When I first plant a rose in a container, before I water it in, I lift the side of the container so that I know how it feels when it is completely dry. Then I water the plant throughly so that I know the soil is totally saturated and there are no air holes. I lift the side of the pot and know how heavy the container feels with the soil is totally wet. After that, when I want to check to see if the plant needs to be watered, I just lift the side of the pot. If the container is on the light side, it's time to water. Otherwise, you can wait because you do not want your rose to stay wet for too long.

You never want the rose to dry out completely, either. So, you water after it starts feeling light.

Good luck with your rose.

I'd rather weed than dust ... the weeds stay gone longer.
Name: Steve
Prescott, AZ (Zone 7b)
Region: Southwest Gardening Roses Irises Lilies
Image
Steve812
Jun 22, 2017 5:50 PM CST
When we forget to drill holes in the bottoms of those cheap but durable new indoor/oudoor pots from Walmart, inside a week the leaves can turn yellow or brown, wilt, and die. I think I caught this one just in time... Sticking tongue out

Thumb of 2017-06-22/Steve812/a73d69

When you dance with nature, try not to step on her toes.
Name: Lyn
Weaverville, California (Zone 8a)
Garden Ideas: Level 1 Garden Sages Celebrating Gardening: 2015
Image
RoseBlush1
Jun 22, 2017 8:37 PM CST
I tip my hat to you.

Remember the days when the pots came with the drainage holes already drilled ?

Good catch, Steve ... Smiling
I'd rather weed than dust ... the weeds stay gone longer.

IndreJann
Jun 23, 2017 11:36 AM CST
Thumb of 2017-06-23/IndreJann/189f01

Thank you for your advice. I cut off the yellowed leaves. It seems that the rose is doing well, as it has bloomed. One more question, though, should I have some kind of support for the roses? it seems that they are heavy and weighing down the branches a little. (excuse my English)
Name: Steve
Prescott, AZ (Zone 7b)
Region: Southwest Gardening Roses Irises Lilies
Image
Steve812
Jun 23, 2017 11:41 AM CST
I will sometimes use bamboo stakes to steady a rose, especially a young plant with thin, flexible canes like this one. It's true that many roses with large flowers have difficulty supporting them well. I think this is a matter of taste.
When you dance with nature, try not to step on her toes.

« Garden.org Homepage
« Back to the top
« Forums List
« Roses forum
Only the members of the Members group may reply to this thread.

Member Login:

Username:

Password:

[ Join now ]

Today's site banner is by Marilyn and is called "Cestrum 'Orange Peel'"