General Discussion:

what can I plant under Black Walnut trees?


Messages posted to thread:

From:Date:Zone:
merle16-Apr-01 11:53 AM EST   
Susan16-Apr-01 02:20 PM EST   
20-Apr-01 09:16 AM EST   
Steph20-Apr-01 09:31 AM EST   
JoanneS20-Apr-01 12:38 PM EST   
lucy20-Apr-01 12:39 PM EST   
21-Apr-01 08:26 PM EST   


Subject: what can I plant under Black Walnut trees?
From: merle
Zone:
Date: 16-Apr-01 11:53 AM EST

I am planning a Japanese Garden which happens to be under a Black Walnut tree in the next yard. What plants will grow under this tree?


Subject: RE: what can I plant under Black Walnut trees?
From: Susan
Zone:
Date: 16-Apr-01 02:20 PM EST

Walnut roots produce juglone, a chemical that inhibits growth of other plants. Its effects can extent several times beyod the tree canopy (so you're definitely going to be affected by uour neighbour's tree...) and is worse in heavy, wet soils and less of a problem in light, well aerated soils where a cetain bacteria feeds on it. Some plants are badly affected by it (e.g tomatoes) while others are less affected. Some of the less affected ones include Japanese maple, some eupnymouses and some rhododendrons, ajuga, European and native gingers (Asarum), lily-of-the-valley, sweet woodruff, , astilbe, bleeding heart, some hostas (e.g Hosta fortunei 'Glauca') polyanthus primroses and lungworts. Wild Columbine , Jack-in-the-Pulpit and wild sweet William (Phlox divaricata, giant Solomon's seal, bloodroot, Canada violets, crested wood fern, sensitive fern, cinnamon fern, glory-of-the-snow, crocuses, snowdrops, grape hyacinths, Scilla and some bedding pansies will also grow in the presence of juglone. Fertilizer high in nitrogen also helps overcome the effects of juglone, but don't apply late in the year or it will leave the plants vulnerable to winter damage.

There should be enough plants in that list to give you things to plant in the affected area....


Subject: RE: what can I plant under Black Walnut trees?
From:
Zone:
Date: 20-Apr-01 09:16 AM EST

I too have a neighbour with a dreaded Black Walnut and by trial and error have most of the above mentioned plants. Rose of Sharon, silverleaf Dogwood, Spirea (sp?), Burning Bush, Lilac, Honeysuckle Vine, Virginia Creeper and Clematis have also done very well in my yard. Good Luck.


Subject: RE: what can I plant under Black Walnut trees?
From: Steph
Zone:
Date: 20-Apr-01 09:31 AM EST

I've had success with hosta,lilies and evening primrose. Also a cedar hedge is thriving in that location


Subject: RE: what can I plant under Black Walnut trees?
From: JoanneS
Zone:
Date: 20-Apr-01 12:38 PM EST

Oooh, thanks for the heads up. I had no idea and was considering putting in a black walnut along my property line, next to my neighbour's garden. I guess I'll have to think of something else.


Subject: RE: what can I plant under Black Walnut trees?
From: lucy
Zone:
Date: 20-Apr-01 12:39 PM EST

Goutweed...I grow it under mine and does wonderful. Looks great as well!


Subject: RE: what can I plant under Black Walnut trees?
From:
Zone:
Date: 21-Apr-01 08:26 PM EST

Sharon... I'm glad you have reconsidered. The Black Walnut drops all of its nuts each fall. Thousands of nuts have to be raked. The squirrels bury them all over your garden and then come back looking for them making a mess. It really is alot of work...and it's not even mine!


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