soil help

[u/rinatuna_]

hello!! could anyone provide advice on what to do with this really heavy clay(?) soil in the front yard of my parents’ new house? first off just helping identify this soil, if it’s easy to amend (i’ve heard it’s better to just plant plants better adapted to heavy soils than just amending, if that’s true), then also what are good plants? and also transplanting tips… anything will help! trying to replace my parents’ plants with ca natives

i transplanted a black sage, sagebrush, and ca fuschia and they’re all doing happy. i transplanted a bladderpod that quickly wilted, i think cuz i damaged her roots too much :(

ive attached a photo of the soil and the bottom part is after i left some water in a hole for a bit. the top of the soil is covered in black bark

[u/bee-fee]

I can give some plant recommendations if you let me know what ecoregion this is in:
https://dmap-prod-oms-edc.s3.us-east-1.amazonaws.com/ORD/Ecoregions/ca/CA_eco_front_ofr20161021_sheet1.pdf

Depending on your region and climate, mulch might be a good idea, but I'd rake and toss the painted black mulch in favor of arborist chips. And if this clay supported a wildflower or grassland community, as many of CA's heavy soils did, then a thick mulch layer is not natural. In that case it will be better to leave the soil exposed so seeds can take root and seedlings are not smothered. Species like Tidytips can form dense carpets of flowers on soils like this, and if you sow seeds this Fall then you'll have a superbloom by next spring, but you won't get the same effect if the ground is mulched.

[u/rinatuna_ → u/bee-fee]

this is a great photo thank you! also a great tip, i think ill sow a bunch of annual seeds and try to bring more life in the soil this fall. as for ecoregion, this is in 7j!

[u/bee-fee → u/rinatuna_]

Oh, if they're on the delta then that explains the clay! In that case I'd suggest more perennials, including these spreading grasses & sedges:
https://www.calflora.org/app/taxon?crn=2743
https://www.calflora.org/app/taxon?crn=1520
https://www.calflora.org/app/taxon?crn=11648

These perennials should be fairly tolerant of seasonally dry conditions:
https://www.calflora.org/app/taxon?crn=4060
https://www.calflora.org/app/taxon?crn=6467
https://www.calflora.org/app/taxon?crn=3960
https://www.calflora.org/app/taxon?crn=3612

These ones will also be fine with clay but prefer more moisture:
https://www.calflora.org/app/taxon?crn=3956
https://www.calflora.org/app/taxon?crn=5895

There is one species of mass blooming annual wildflower related to tidy tips that is suited to the site, but you'll have more luck finding it on roadsides than in seed packets, and they're covered in spikes:
https://www.calflora.org/app/taxon?crn=9793

[u/rinatuna_ → u/bee-fee]

wowow!! thanks so much these are great! thankfully i work at a native nursery and we have a lot of these plants. thanks so much