Proven Berry Plants < r KNOTT’S BERRY PLACE r r Trees and Vines 
Blackberries 
The Advance Blackberry —The Advance 
has always been very much earlier than 
any other blackberry grown in Califor¬ 
nia. It starts ripening about three weeks 
earlier than Gardena dewberries. In the 
more sheltered sections of San Diego 
and Ventura counties, growers often 
start selling Advance blackberries in 
March, and they ripen in other sections 
of California during April, or by May 
first, nearly a month ahead of other 
blackberries. 
They should not be planted in the 
colder districts, especially where there 
is danger of late frosts, because they 
blossom so very early. In size they are 
about average with most common black¬ 
berries, but they are very much firmer 
than ordinary blackberries which makes 
them much better for shipping. We ship 
them as far east as Albuquerque with¬ 
out refrigeration. 
There are two strains of the Advance 
variety which have to be properly mixed 
for best pollination. If your order con¬ 
tains Advance, these two strains will be 
tied separately so that you can plant al¬ 
ternately in your rows. 
Mountain Blackberry —This is a new 
and improved strain developed from the 
Advance blackberry. It has a number of 
important points in its favor. The vines 
or bushes grow and look almost exactly 
like Advance blackberries. They can 
be either, pruned and trellised like 
Youngberries or Loganberries, or, after 
the first year, they can be headed back 
and grown in bushes, as ordinary black¬ 
berries are grown. They are evergreen 
and a little earlier even than Advance; 
this makes them the earliest of all 
blackberries. The fruit is round and very 
good size, being larger and more uni¬ 
form in size than the Advance, and it is 
exceedingly firm. It is a fine shipper. 
With this variety it is not necessary 
to plant two kinds for pollination. The 
fruit starts getting ripe in March or 
April, owing to the locality and the sea¬ 
son, and picking continues for about five 
weeks. Both the Mountain blacks and 
the Advance, being evergreen, do not 
have to be planted as early as other va¬ 
rieties because they grow later in the 
fall. We consider March or even April 
the ideal time to plant these varieties. 
Commercial berry growers in the more 
protected parts of California should 
plant some Mountain blacks. They will 
give an income in the spring at least a 
month before other varieties are ripe. 
They bring good prices because there are 
no other varieties to compete with them. 
They make it possible for you to get 
your customers and be supplying them 
regularly before other varieties come on 
the market and competition gets so 
keen. In this way it helps you sell your 
later varieties. Plant them — you can 
easily see they will make you money. 
Home Owners, if you will set out a 
few plants of Mountain blacks you will 
have blackberries a month earlier, and 
they will be fine berries too. Plant five 
feet apart in rows eight feet across, 
1000 plants per acre. 
Prices prepaid for both Mountain Black 
and Advance. 
Each 15c, 10 for $1.25, 25 for $2.50, 50 
for $4.00, 100 for $5.50, 1000 for $45.00. 
One Branch of Macatawa Blackberries 
Macatawa Blackberry. (Sometimes 
called Macatawa Everbearing.) We con¬ 
sider this variety an improved, selected 
strain of the old Crandall blackberry. It 
is bush type requiring no support after 
the first season. The fruit is uniformly 
large, very sweet, and firm, with few 
seeds and practically no core. It bears 
an exceedingly heavy crop through June 
and July and usually another light crop 
of very large berries in the fall. It is 
from this characteristic that it derives 
the name Everbearing. 
This variety will produce satisfactory 
crops under a wider range of soils and 
under more adverse conditions than any 
other blackberry we have ever seen. In 
all the years that we have been growing 
them we have never had a crop failure 
nor even a short crop. Year after year 
we pick from fifteen to twenty thousand 
baskets per acre and the quality is uni¬ 
formly good. 
It is the best mid-season blackberry 
for the home gardener because it never 
fails to bear abundant crops, which last 
over quite a long season; and because 
the fruit is fine for eating fresh as well 
4 
